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Journal articles on the topic 'Road work zones'
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1
Vrkljan, Joso, Miljenko Mustapić, and Antun Štimac. "Ekspertni pristup poboljšanju sigurnosti u zonama radova na cesti." Sigurnost 60, no. 3 (2018): 247–60. http://dx.doi.org/10.31306/s.60.3.2.
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SUMMARY: An ever-increasing volume of traffic on Croatian roads increases the volume of maintenance work. Road works negatively impact traffic mobility and road user safety, and also safety of the maintenance workers. Improving traffic mobility and safety is the key issue that all interested parties (planning and managing road works and those executing them) should address. Mitigation of negative effects is possible via certain expert system measures. Presented in the paper are the options provided by expert systems implemented in the road work zones as factors for improving road maintenance and safe traffic flow, as well as road workers safety. Introducing relevant data into the data base, an expert system is created providing the driver approaching a road work zone with a number of alternative routes. Also shown is a driving diagram for road work zones with special focus on slowing down speed upon entering the road work zone. The results show that the implementation of expert systems based on relevant data would significantly facilitate traffic management in road work zones and improve the safety of traffic and road workers, as well as the workers' efficacy.
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Andjelkovic, Stefan, and Vladan Tubić. "Highway capacity in work zones – experiences in foreign conditions." Put i saobraćaj 66, no. 3 (2020): 49–58. http://dx.doi.org/10.31075/pis.66.03.07.
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Traffic management in the highway work zones is a challenge for all traffic engineers. Road work zones are one of the most significant problems for the normal realization of traffic conditions, which can cause various consequences that will greatly reduce capacity and reduce the level of service. On the sections in the work zone, bottlenecks appear, which result in congestion, ie. lead to an imbalance of traffic demand and road capacity. This paper provides an overview of the literature and foreign experiences and ways of regulating traffic in the work zones on the highway. Bearing in mind that we are talking about roads of the highest rank, where are sections with work zones, it is necessary to maintain a satisfactory level of service by applying the concept of regulation that will minimally interfere the normal realization of traffic conditions.
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Alsultan, Saleh M., Fahad K. Alqahtani, and Khalid F. Alkahtani. "Health and Safety in Temporary Work Zone Road Construction Project in Saudi Arabia: Risks and Solutions." International Journal of Environmental Research and Public Health 19, no. 17 (2022): 10627. http://dx.doi.org/10.3390/ijerph191710627.
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Road project sites are dangerous and crash-prone, with many hazards that can cause injuries and can result in the deaths of road users or site-workers. Work zones for road construction or maintenance can potentially contribute to increasing these crashes. Many studies have addressed this issue; however, there is a lack of similar studies in Saudi Arabia. Therefore, this study contributes to developing safety practices for road work zones in Saudi Arabia by identifying, analyzing, and controlling the main risk factors. A survey approach was used to identify risk factors and potential countermeasures from road users’ and civil engineering experts’ perceptions. The main findings showed that most participants believed that the presence of work zones on the road might increase the probability of crash occurrence and that the highest risk factor that could cause a crash in a work zone is related to driver behavior. Both groups agreed that strict action against contractors or consultants who have safety violations would enhance road safety in work zones. Considering the findings of this study, decision-makers should take strong action to implement and improve road safety practices.
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Nawaf M. Alshabibi, Nawaf M. Alshabibi. "Impact Assessment of Long-Term Work Zones in Arterial Roads on Commercial Activities in Dammam Metropolitan Area, Saudi Arabia." journal of King Abdulaziz University Engineering Sciences 29, no. 2 (2018): 19–36. http://dx.doi.org/10.4197/eng.29-2.2.
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This paper assesses the impact of long-term work zones in arterial roads on commercial activities in Dammam Metropolitan area. The study focuses on two cases of long-term work zones in arterials in two major cities in Dammam Metropolitan Area. The first case is a work zone with full lanes closure on Prince Mohamed Bin Fahad Road at the south east entrance of Dammam city. The second case is a work zone with full lanes closure on King Abdul-Aziz Road at the northern entrance of Al-Khobar City. Data collection relies on field survey including questionnaires to affected business owners and managers. The questionnaire has been developed to assess the impact before and during road works period, in the work zone, on mobility and accessibility to commercial activities. Field survey includes 201 commercial activities at two work zone locations. Answers have been registered in Excel spreadsheet. Data analysis includes percentages of change, means, and standard deviation of dependent variables before and during the presence of the work zone. It was found that long-term work zones on arterials have multiple negative impacts on workers, sales, and customers. These impacts are related to lack of mobility, accessibility and reduction of parking availability during work period. Also, restaurants and travel agencies were the most effected activities by work zone presence, while banks were the least effected.
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Paolo, Perco, and Dean Sar. "Driving Speed Behaviour Approaching Road Work Zones On Two-Lane Rural Roads." Procedia - Social and Behavioral Sciences 53 (October 2012): 672–81. http://dx.doi.org/10.1016/j.sbspro.2012.09.917.
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Trojanová, M., M. Margorínová, and A. Kowalska-Koczwara. "Quantification and Valuation of Travel Time Costs Due to Road Works in the Integrated System of Road Economic Evaluation." Civil and Environmental Engineering 15, no. 2 (2019): 166–73. http://dx.doi.org/10.2478/cee-2019-0020.
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AbstractSoftware ISEH (Integrated system of road projects economic evaluation) evaluates variants of road repair and maintenance technologies. The economic assessment is based on Cost Benefit Analysis indicators (net present value, internal rate of return, pay-back period and cost benefit ratio). According quantified indicators are determined order of repairs and maintenance of assessed road sections. The road works cause additional negative impacts to road users. The road repairs and maintenance create on road so-called work zones, which negative affect road users. One of the negative impacts is travel time loss of road users. The process of quantification and valuation of travel time costs due to road works, i.e. work zones create a base for implementation to the ISEH software. For implementation it was necessary to suggest changes in current algorithm of the Software - Integrated system of road projects economic evaluation. The aim of the implementation is effective planning road repairs and maintenance not only in terms of choice effective technology but also in terms of reducing negative impacts to road users. A practical example of calculating travel time costs due to work zone has been processed in Excel software.
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Vignali, Valeria, Arianna Bichicchi, Andrea Simone, Claudio Lantieri, Giulio Dondi, and Marco Costa. "Road sign vision and driver behaviour in work zones." Transportation Research Part F: Traffic Psychology and Behaviour 60 (January 2019): 474–84. http://dx.doi.org/10.1016/j.trf.2018.11.005.
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Silveira, Renato, Sara Ferreira, Liliana Cunha, and Mario Rebelo. "Driver behavior on road work zones: a systematic review." Transportation Research Procedia 72 (2023): 1318–25. http://dx.doi.org/10.1016/j.trpro.2023.11.593.
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Zhang, Chi, Jihan Qin, Min Zhang, Hong Zhang, and Yudi Hou. "Practical Road-Resistance Functions for Expressway Work Zones in Occupied Lane Conditions." Sustainability 11, no. 2 (2019): 382. http://dx.doi.org/10.3390/su11020382.
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In order to create a practical road-resistance function for work zones under different lane occupation conditions, the expected speed of vehicles was calibrated in the work zone simulation model based on measured data, and simulation models were constructed for the closed half lane and the closed inside lane under different rates of trucks. Based on the statistical theory, the influence of significance of traffic volume and truck ratios for road resistance was analyzed, and a suitable truck ratio was found for the work zone. By using the optimal nonlinear fitting theory, the practical road-resistance function for work zones under different lane occupation conditions was constructed. The results showed that the road resistance is significantly affected by the traffic volume and rate of trucks. Under the same truck ratio, the road resistance linearly increases slowly when the traffic volume is less than the critical traffic volume and rapid increases irregularly when it is greater than the critical traffic volume. Under the same traffic load, the road resistance of the work zone increases with the increase in the rate of trucks, and the difference is not obvious when the traffic volume is less than the critical traffic volume, and increases gradually when it is greater than the critical traffic volume. Through the goodness of fit test and the homogeneity of variance test, the road-resistance function constructed in this paper has high goodness of fit. The practical road-resistance functions constructed in this study could be used to guide the diversion of the rebuilt/expanded highway to ensure traffic safety. Further, the study provides a theoretical basis for the construction of intelligent highway work zones.
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Venugopal, Shyam, and Andrzej Tarko. "Safety Models for Rural Freeway Work Zones." Transportation Research Record: Journal of the Transportation Research Board 1715, no. 1 (2000): 1–9. http://dx.doi.org/10.3141/1715-01.
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Construction and maintenance work zones have traditionally been hazardous locations within the highway environment. Studies show that the accident rates during road construction are generally higher than during periods of regular traffic operations. The increase in the number of crashes may be attributed to ( a) general disruption to the flowing traffic due to sudden discontinuities caused by closed lanes, ( b) improper lane merging maneuvers, ( c) the presence of heavy construction equipment within the work area, ( d) inappropriate use of traffic control devices, and ( e) poor traffic management. Research was conducted to develop regression models predicting the expected number of crashes at work zones on rural, two-lane freeway segments. Crashes on approaches to work zones and those inside the work zones were analyzed separately. For developing these models, an extensive database was obtained, including freeway data, crash data, and work zone characteristics. Negative binomial models were developed with average daily traffic, the length of the work zones, and the duration of the work projects as exposure-to-risk variables. The cost of the various work projects was found to be a good substitute for some of the exposure-to-risk variables. The investigated variables included the number of on and off ramps, both on approaches and inside the work zones; the type of work; and the intensity of the road work involved. The models may be used to evaluate beforehand the expected number of crashes on the work zone, given the work zone characteristics.
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Fang, Song, and Jianxiao Ma. "Influence Range and Traffic Risk Analysis of Moving Work Zones on Urban Roads." Sustainability 13, no. 8 (2021): 4196. http://dx.doi.org/10.3390/su13084196.
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There is a body of literature on the influence range and traffic risk of fixed work zones. However, relatively few studies have examined the effect of ubiquitous moving operating vehicles, such as road cleaners, on urban roads. The influence of low speed moving work zones on road traffic flow and traffic risk is still unclear. In this work, we used simulations to establish an urban expressway three lanes VISSIM model, and selected the road traffic volume and speed of the moving work zone as the independent variables. We analyzed the range of influence of the moving work zone on the rear vehicles in the left, middle and right lanes of the urban expressway and the traffic risk variation law caused by the moving work zone. The results show that the left lane was indirectly affected by the moving work zone when the traffic volume reached 2000 pcu/h. The influence of the moving work zone on the middle lane was controlled by the traffic volume and the speed of the moving work zone. Both the left and middle lanes were mainly impacted by vehicles changing lane from the right lane. Regardless of the traffic volume and the speed of the moving work zone change, the vehicles 200 m behind a moving work zone will be directly affected in the right lane. Furthermore, the average traffic risk is the highest within 50 m of the moving work zone in the right lane. When the traffic volume decreases and the speed of the moving work zone increases, the average traffic risk decreases gradually. These results provide a scientific basis for the operation and management of moving working vehicles on urban roads.
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Tchato, Sandra Céleste, Blaise Pascal Gounou Pokam, Marthe Mbond Ariane Gweth, et al. "Possible Influence of Brittle Tectonics on the Main Road Network Built in the Central African Environment Using Remote Sensing and GIS." Sustainability 15, no. 21 (2023): 15551. http://dx.doi.org/10.3390/su152115551.
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The construction of sustainable road and highway networks in the world, despite numerous feasibility, pre-feasibility and execution studies, are always confronted with the demands and vagaries of foreseeable and unforeseeable natural disasters. Studying cyclones, earthquakes, fracturing and landslide zones along roads is therefore a challenge for the sustainability of these infrastructures. In many countries around the world, the methods generally used for these studies are not only expensive and time-consuming, but also the results obtained are not always efficient. This work examines whether Landsat 8 (with a high cloud level) and SRTM data can be used in both equatorial and coastal Central Africa zones to produce relevant mapping, locating fracture and landslide zones, in order to contribute not only to a better road layout at lower cost and in a relatively short time, but also to a better prevention of geological disasters that may occur on its network. To this end, a map of the main road network was produced and validated with field data, as well as the maps of the main unstable slopes, faults and fractures zones intersecting the road or highway network. These approaches are useful for sustainable planning, management, monitoring and extension of roads worldwide, especially in Central Africa.
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Wang, Ya, Binghong Pan, Zilong Xie, Mengyu Shao, Mengmeng Shi, and Xin Tian. "Evaluation of Different Work Zone Road-Occupation Schemes for Monorail Construction." Applied Sciences 13, no. 24 (2023): 13200. http://dx.doi.org/10.3390/app132413200.
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Due to the increasing demand for transportation, road renovation is inevitable, and the emergence of work zones has become the most common problem in traffic control. There are many research results on the impact of work zones on traffic operation, but most of them focus on various capacity theoretical models or traffic flow control strategies and are mostly concentrated in highway work areas and urban road subway construction work areas. The location of these work zones is often unable to be changed and is mostly considered reasonable. At present, there is still a gap in selecting and evaluating the location of the work zone. Therefore, this article studied a bidirectional six-lane intersection in Xi’an and investigated the situation of traffic flow distortion caused by the setting of work zones at the intersection. Two different positions and forms of work zones were designed for evaluation and analysis. Firstly, we used VISSIM (2022 student) to simulate the original and proposed work zone road-occupation schemes and analyzed six indicators. Finally, in order to determine the optimal work zone locations under different traffic situations, we applied the entropy weight method (EWM) to assign weights to multiple indicators, thereby achieving a comprehensive assessment of various schemes. The results showed that the highest improvement level among the six indicators was 50.2%, and different schemes adapted to different traffic situations. However, occupying two lanes of the median opposite the exit lane performed better under high traffic volume. Occupying the median and lanes on both sides of the median is suitable for low traffic volume. Occupying two lanes of the entrance lane and using the opposite lane as the left-turn entrance lane is suitable for situations with high traffic volume in the opposite lane.
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Shao, Yang, Zhongbin Luo, Huan Wu, et al. "Evaluation of Two Improved Schemes at Non-Aligned Intersections Affected by a Work Zone with an Entropy Method." Sustainability 12, no. 14 (2020): 5494. http://dx.doi.org/10.3390/su12145494.
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The impact of work zones on traffic is a common problem encountered in traffic management. The reconstruction of roads is inevitable, and it is necessary and urgent to reduce the impact of the work zone on the operation of traffic. There are many existing research results on the influence of highway work zones, including management strategies, traffic flow control strategies, and various corresponding model theories. There are also many research results on the impacts of urban road and subway construction on traffic operation, including construction efficiency, economic impact, and travel matrix. However, there are few studies concerning the choice of work zone location, and most previous studies have assumed that the work zone choice was scientific and reasonable. Therefore, it is reasonable to choose the location of the work zone and to assess whether there is room for improvement in the road form of the work zone, but this remains a research gap. Therefore, we studied a seven-lane main road T-intersection in Xi’an, China, and investigated a work zone located at this intersection that caused a road offset, leading to the non-aligned flow of main traffic. We designed two road improvement schemes and multiple transition schemes, used VISSIM software to evaluate the traffic operation of the two schemes, and used the entropy method to choose the suitability of the two schemes under different conditions. According to the results, in the best case, the driving time, delay, and number of stops are reduced by 44%, 66%, and 92%.
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Huang, Qian, and Jing Shi. "Optimizing work zones for two-lane urban road maintenance projects." Tsinghua Science and Technology 13, no. 5 (2008): 644–50. http://dx.doi.org/10.1016/s1007-0214(08)70106-8.
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Abante, A. M. R. "EXPOSURE-STANCE CONCEPT MODEL." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVI-4/W6-2021 (November 18, 2021): 1–9. http://dx.doi.org/10.5194/isprs-archives-xlvi-4-w6-2021-1-2021.
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Abstract. The paper presents an exposure-stance concept model with three basic elements: proximity regarded as a measurement of nearness, accessibility which refers to the road stance serviceability that convey the people or goods from place to place by means of a vehicle, and connectivity of uncontrolled activities i.e. road and/or building constructions, nearness (measurement) information to be reached from or to be reached by to transport people and resources regardless if it traverses the danger or hazard zones in the slopes of Mayon Volcano. The challenging work is modelling the level of exposure-stances operationally defined as the accessibility in terms of road stance serviceability, connectivity in terms of road constructed and building footprints’ nearness measurement with danger or hazard zones relative to the risk reality phenomenon information happening in Mayon Volcano. This paper practically highlighted results, specifically on the matrix of levels of exposure-stances contexts that creates knowledge prompted by spatial information (nearness measurements) featuring accessibility, connectivity, proximity, risk reality, danger and hazards zones, and OSM roads and building footprints variables. The study concluded that rejecting roads and building (lines and polygons) mimics the perpetual relocation of exposed residents. Also, closing the proclaimed protected forest areas to any activities will likely nil exposure, thus lowering risk hotspot level of significance. Hence, nulling exposure stance variable if not dispersing exposure featuring roads and buildings within the protected areas, development constraint areas, and permanent and extended danger zones of Mayon Volcano has a practical implication to stabilize and sustain developments at the foot slopes of the volcano.
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НАУМОВА, И. В. "MULTIFUNCTIONAL ROAD SERVICE ZONES AS NEW OPPORTUNITIES FOR BUSINESS AND TOURISM." Экономика и предпринимательство, no. 12(149) (May 21, 2023): 414–17. http://dx.doi.org/10.34925/eip.2022.149.12.080.
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Современные многофункциональные зоны дорожного сервиса строятся в соответствии с новыми стандартами инфраструктуры платных дорог, дают новые возможности для развития бизнеса, в том числе в регионах, и являются центрами социально-экономической активности на платных дорогах России. Многофункциональные зоны дорожного сервиса позволяют удовлетворить потребности пользователей платных дорог, региональное бизнес-сообщество имеет возможность создать на этих площадках объекты сервиса и организовать работу на них, а регион заинтересован в развитии придорожного сервиса. Modern multifunctional road service zones are being built in accordance with the new toll road infrastructure standards, provide new opportunities for business development, including in the regions, and are centers of social and economic activity on Russian toll roads. Multifunctional road service zones make it possible to meet the needs of toll road users, the regional business community has the opportunity to create service facilities at these sites and organize work on them, and the region is interested in the development of roadside service.
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Bardal, Anna, and Irina Shitova. "The Road Network of the Russian Far East: Current State and Regional Price Differentiation of Construction." Regionalistica 10, no. 2 (2023): 5–24. http://dx.doi.org/10.14530/reg.2023.2.5.
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The paper considers the road network of the Far Eastern Federal District, which determines the possibilities of road transport, and assesses its role in the transport complex of the macroregion. The purpose of the work is to analyze the key parameters of the road network and regional features of the formation of the cost of road construction. The dynamics of the road network in the period 2015–2021 and its qualitative characteristics are considered. There is a predominance of regional roads in the northern regions of the Far East, while in the southern regions local roads predominate; as well as the lag of the macroregion in terms of the quality of the road network from the average Russian indicators. The increase in the intensity of trunk transit in 2022 against the backdrop of the reorientation of the main part of export cargo to the Pacific regional direction led to the tendency to transfer part of the intraregional cargo from rail to road transport. This actualizes the need for the development of roads and the assessment of the rise in the cost of road construction, taking into account the conditions of the Far Eastern regions of the Russian Federation. To analyze the differences in the conditions of road construction between the territories of the Far Eastern Federal District, 38 price zones were identified. Using the basic-index method for each price zone, the coefficients of appreciation of costs for the construction a conditional road facility were calculated (standard works for the construction of 1 km of a category II highway was taken into account). As a result, the interval of the coefficient of appreciation of costs for the construction and installation works (relative to the base facility) in the Far East ranged from 1,02 (Republic of Buryatia; price zone V) to 1,93 (Chukotka Autonomous Okrug; price zone II). The obtained estimates of cost differentiation for the selected price zones of the Far Eastern Federal District are presented on the cartogram
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Zhang, Kairan, and Mohamed Hassan. "Identifying the Factors Contributing to Injury Severity in Work Zone Rear-End Crashes." Journal of Advanced Transportation 2019 (May 2, 2019): 1–9. http://dx.doi.org/10.1155/2019/4126102.
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Egypt’s National Road Project is a large infrastructure project aiming to upgrade the existing network of 2500 kilometers as well as constructing new roads of 4000 kilometers to meet today’s need. Increasing highway work zones eventually direct the challenges for traffic safety and mobility. Realizing the need for mitigating the impact of such a challenging scenario, this paper aims to investigate and identify the factors of work zone rear-end crash severity. In this regard, a random parameter ordered probit model was applied to analyze data on the Egyptian long-term highway work zone projects during the period of 2010 to 2017. The factors of speeding and foggy weather conditions are found to be the key indicators for modeling the random parameters. Besides, during the weekend and at nighttime, there is a higher risk of rear-end crash in work zones, while heavy and passenger vehicles are at greater risk in this regard. It is anticipated that the findings of this study would facilitate transport agencies in developing effective measures to ensure safe mobility across work zones.
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Meng, Qiang, Hai Yang, and Sze-Chun Wong. "A Combined Land-Use and Transportation Model for Work Trips." Environment and Planning B: Planning and Design 27, no. 1 (2000): 93–103. http://dx.doi.org/10.1068/b2608.
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In this paper we propose a combined land-use and transportation model for work trips with constraints on the road network capacity. A Lowry-type land-use model is used to distribute all the given activities into various residential and employment zones. Trip distributions are based on the equilibrium round-trip cost, which is obtained from a network equilibrium model. A bilevel programming approach is used to determine the maximum number of trips that can be accommodated by the road network subject to the network-capacity constraints.
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S.Hrushikesava Raju, Dr, Dr M.Nagabhushana Rao, Dr N.Sudheer, and Dr P.Kavitharani. "Visual Safe Road Travel App Over Google Maps About the Traffic and External Conditions." International Journal of Engineering & Technology 7, no. 2.32 (2018): 283. http://dx.doi.org/10.14419/ijet.v7i2.32.15697.
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In travelling on the roads, Most of our people might get accidents because of lack of road awareness and the traffic potential, also this unpredicted traffic leads to delay in the predicted travel duration. To avoid this kind of odd experiences, the proposed work focuses on the vehicle load characteristics in the available road paths traffic that is existing in the distance of 2-3 kilometers. The characteristics dealt here are vehicle load moving in the same direction as well as vehicle load moving in the opposite direction, danger zones, any wild turns, floods status on the road, group of animals crossing or on the road, any road works intimation, any bridges or flyover conditions, any situational areas like forests, high mountains, lack of public in the areas in the coming 2-3 kilometers in that road if it is two way path in the same road or separate paths infrastructure available. This is more secure because authorized users only will use this kind of facility where users are authorized by their Unique aadhar Number along with their family member details.
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Yadav, Prashant, Ajay K. Duggal, and Dr Navdeep Asija. "A Review on Work Zone Safety During Blackspot Improvement Construction Under Blackspot Management." International Journal for Research in Applied Science and Engineering Technology 10, no. 8 (2022): 40–44. http://dx.doi.org/10.22214/ijraset.2022.46110.
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Abstract: Massive Road building and development is being taken up in India, under various schemes, such as National Highway Development Project (NHDP) and Prime Minister’s Rural Road Development Schemes (PMGSY). Activities of improvement of about 45,000 kms of National Highways and around 400,000 kms of rural roads besides numerous urban roads are going on, all across the country. To ensure safety of all, there is a need to adopt an efficient and effective plan for management of traffic in work zones which are already blackspots. Work Zone Traffic Management Plans (WTMPs) are required to meet the safety needs of regular traffic as well as works traffic, ensuring minimum disruption in access to properties and movement of pedestrians. This research is a case study of road accident scenario on NH-152(Ambala-Zirakpur section). In 28.05 kilometers long stretch it has 24 identified accidental black spots, indicates that about 12-13 km of the road length has engineering faults and lack adequate infrastructure as per the requirements of the vehicles/pedestrians. This research talk about management of activities involved during its blackspot rectification work in work zone areas. As per this approach we have divided whole stretch into 5 corridors and described management of activities with main concern of safety, cost and time. At last, we have compared traditional approach of blackspot improvement and corridor approach of black spot improvement and finally concluded our study in form of guidelines which can be adopted during black spot rectification using corridor approach.
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Kumari Dara, Anitha, and Dr A. Govardhan. "Detection of Coordinate Based Accident-Prone Areas on Road Surface using Machine Learning Methods." International Journal of Computer Engineering and Information Technology 12, no. 3 (2020): 19–25. http://dx.doi.org/10.47277/ijceit/12(3)1.
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The growth in the road networks in India and other developing countries have influenced the growth in transport industry and other industries, which depends on the road network for operations. The industries such as postal services or mover services have influenced the similar growths in these industries as well. However, the dependency of these industries is high on the road surface conditions and any deviation on the road surface conditions can also influence the performance of the services provided by the mentioned services. Nonetheless, the conditions of the road surface are one of the prime factors for road safety and number of evidences are found, which are discussed in subsequent sections of this work, that the bad road surface conditions are increasing the road accidents. Several parallel research attempts are deployed in order to find out, the regions where the road surface conditions are not proper, and the traffic density is higher. Nevertheless, outcomes of these parallel works are highly criticised due to the lack of accuracy in detection of the road surface defects, detection of accurate location of the defects and detection of the traffic density data from various sources. Thus, this work proposes a novel framework for detection of the road defect and further mapping to the spatial data coordinates resulting into the detection of the accident-prone zones or accident affinities of the roads. This work deploys a self-adjusting parametric coefficient-based regression model for detection of the risk factors of the road defects and in the other hand, extracts the traffic density of the road regions and further maps the accident affinities. This work outcomes into 97.69% accurate detection of the road accident affinity and demonstrates less complexity compared with the other parallel research outcomes
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Sharma, Smita. "A Smart Solution." Traffic Technology International 2024, no. 1 (2024): 128–29. http://dx.doi.org/10.12968/s1356-9252(24)40060-9.
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Wu, Biao, Chunyue Zou, Yun Li, Dongnan Fan, and Shengxue Zhu. "Impact of Road Environment on Drivers’ Preference to Merging Location Selection in Freeway Work Zone Merging Areas." Journal of Advanced Transportation 2022 (April 11, 2022): 1–11. http://dx.doi.org/10.1155/2022/2996081.
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In view of the compulsory merging behavior and complex driving environment in freeway work zones, the factors influencing drivers’ merging behavior need to be focused on the given road environment. Realizing the need to mitigate the impact of such a challenging scenario, this study aims to explore the impact of road environment on drivers’ merging location selection in freeway work zone merging areas. The survey data for modelling were collected through questionnaires survey based on the stated preference (SP) method. The logistics regression model was utilized to extract the significant factors influencing merging location selection. The results of fitting effect analysis show that the developed logistics regression models provide a good fit for the survey data. The road conditions and speed limit strategies are the significant factors affecting the drivers’ preference to merging location selection in upstream transition area. The road conditions, traffic environment conditions, speed conditions, and speed limit strategies are the prominent influencing factors to the latter part of advance warning area. It is a comprehensive analysis to consider the influence of road environment on merging location selection from the perspective of drivers, which is expected to support the merging control strategy and avoid the occurrence of traffic crash in work zones.
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Wu, Ke Man, and Lian De Zhong. "Established Methods of Space between Expressway Work Zones Based on Delay of Expressway." Applied Mechanics and Materials 409-410 (September 2013): 1374–78. http://dx.doi.org/10.4028/www.scientific.net/amm.409-410.1374.
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Via microscopic traffic flow simulation, based on the theory of traffic capacity and queue delay of vehicles on work zones and relying on the Reconstruction and Widening of Fekai Expressway, the paper gives suggested values of minimum space between adjacent work zones in the same direction under different traffic volumes and traffic compositions for references, during the construction of a two-way-8-lane highway with half road way closed. The result can promote work zone traffic safety.
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Van Renterghem, Timothy, Pieter Thomas, and Dick Botteldooren. "Landscape depressions can create silent zones in noise polluted parks." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 4 (2021): 2550–54. http://dx.doi.org/10.3397/in-2021-2170.
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Excessive road traffic noise exposure in (sub)urban parks hinders its restorative function and will negatively impact the number of visitors. Especially in such green environments, noise abatements by natural means, well integrated in the landscape, are the most desired solutions. Although dense vegetation bordering the park or raised berms could come first in mind, local landscape depressions are typically underused. In this work, a case-study of a small suburban park, squeezed in between two major arterial roads, is analyzed. The spatially dependent road traffic noise exposure in the park is assessed in detail by mobile sound pressure level measurements. Local reductions of up to 6-7 dBA are found at landscape depressions of only a few meters deep. It can therefore be concluded that this is an efficient measure and should be added to the environmental noise control toolbox for noise polluted parks.
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Yu, Yao, Jinxian Weng, and Wanying Zhu. "Optimizing Strategies for the Urban Work Zone with Time Window Constraints." Sustainability 11, no. 15 (2019): 4218. http://dx.doi.org/10.3390/su11154218.
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Work zones that move with road maintenance tasks are enclosing and have caused severe traffic jams and the significant decline of road capacity. This paper proposes an intelligent-based multi-objects road maintenance optimization strategy based on a practical origin–destination (OD) matrix and complicated work schedules over a real urban road network. It focuses on the optimization of multi short-term maintenance tasks and the minimization of average travel delay for vehicles passing through. By taking the driving characteristic into account, static and dynamic variable speed limit strategies provide access to ensure safety on the working road network. Through this view, the problem was formulated as a mixed multi-object nonlinear program (MNLP) model with respect to the time window of the related sub-maintenance task. By using actual OD distribution matrix data, a series of microscopic simulated cases were conducted to test the model’s validity. Moreover, sensitive analyses of types of parameters (e.g., traffic safety threshold, traffic flow and working efficiency) with an optimal solution were discussed considering five different scenarios.
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Theofilatos, Athanasios, Apostolos Ziakopoulos, Eleonora Papadimitriou, George Yannis, and Konstantinos Diamandouros. "Meta-analysis of the effect of road work zones on crash occurrence." Accident Analysis & Prevention 108 (November 2017): 1–8. http://dx.doi.org/10.1016/j.aap.2017.07.024.
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Vieira, Adriana, Bertha Santos, and Luís Picado-Santos. "Modelling Road Work Zone Crashes’ Nature and Type of Person Involved Using Multinomial Logistic Regression." Sustainability 15, no. 3 (2023): 2674. http://dx.doi.org/10.3390/su15032674.
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The sustainable development goals “Good health and well-being” and “Sustainable cities and communities” of the United Nations and World Health Organization, alert governments and researchers and raise awareness about road safety problems and the need to mitigate them. In Portugal, after the economic crisis of 2008–2013, a significant amount of road assets demand investment in maintenance and rehabilitation. The areas where these actions take place are called work zones. Considering the particularities of these areas, the proposed work aims to identify the main factors that impact the occurrence of work zones crashes. It uses the statistical technique of multinomial logistic regression, applied to official data on road crashes occurred in mainland Portugal, during the period of 2010–2015. Usually, multinomial logistic regression models are developed for crash and injury severity. In this work, the feasibility of developing predictive models for crash nature (collision, run off road and running over pedestrians) and for type of person involved in the crash (driver, passenger and pedestrian), considering only one covariate (the number of persons involved in the crash), was studied. For the two predictive models obtained, the variables road environment (urban/rural), horizontal geometric design (straight/curve), pavement grip conditions (good/bad), heavy vehicle involvement, and injury severity (fatalities, serious and slightly injuries), were identified as the preponderant factors in a universe of 230 investigated variables. Results point to an increase of work zone crash probability due to driver actions such as running straight and excessive speed for the prevailing conditions.
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Zuberi, Rubina S., and Syed N. Ahmad. "Secure Mix-Zones for Privacy Protection of Road Network Location Based Services Users." Journal of Computer Networks and Communications 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/3821593.
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Privacy has been found to be the major impediment and hence the area to be worked out for the provision of Location Based Services in the wide sense. With the emergence of smart, easily portable, communicating devices, information acquisition is achieving new domains. The work presented here is an extension of the ongoing work towards achieving privacy for the present day emerging communication techniques. This work emphasizes one of the most effective real-time privacy enhancement techniques called Mix-Zones. In this paper, we have presented a model of a secure road network with Mix-Zones getting activated on the basis of spatial as well as temporal factors. The temporal factors are ascertained by the amount of traffic and its flow. The paper also discusses the importance of the number of Mix-Zones a user traverses and their mixing effectiveness. We have also shown here using our simulations which are required for the real-time treatment of the problem that the proposed transient Mix-Zones are part of a viable and robust solution towards the road network privacy protection of the communicating moving objects of the present scenario.
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Singh, Mohit Kumar, Gaurav Pandey, and K. Ramachandra Rao. "Optimization of Work Zone Segments on Urban Roads Using Cellular Automata Model in Mixed Traffic." Periodica Polytechnica Transportation Engineering 47, no. 1 (2018): 29–35. http://dx.doi.org/10.3311/pptr.9992.
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Increased delays and reduced speeds in work zones leads to congestion. This can be improved by optimizing the work zone length. The focus of this study is to model work zones using cellular automata model and to find the effects of work zones on traffic flow. The methodology adopted in the study involved creating work-zone on the road by blocking some of the cells and then determining traffic characteristics such as delay and queue lengths for model validation. For this the lateral movement rules of the existing Cellular Automata model were modified in order to replicate the traffic movement near work zones. This model is calibrated and validated using data from work zone observed near a metro rail station in Delhi. From the analysis it was evident that the queue length increased with increase in the length of work zone. Several relationships were tried between delay and work zone length. Among them the rational form was found suitable.
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Sekuła, Przemysław, Zachary Vander Laan, Kaveh Farokhi Sadabadi, and Mirosław J. Skibniewski. "Predicting Work Zone Collision Probabilities via Clustering: Application in Optimal Deployment of Highway Response Teams." Journal of Advanced Transportation 2018 (September 18, 2018): 1–16. http://dx.doi.org/10.1155/2018/3179207.
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This paper proposes a clustering approach to predict the probability of a collision occurring in the proximity of planned road maintenance operations (i.e., work zones). The proposed method is applied to over 54,000 short-term work zones in the state of Maryland and demonstrates an ability to predict work zone collision probabilities. One of the key applications of this work is using the predicted probabilities at the operational level to help allocate highway response teams. To this end, a two-stage stochastic program is used to locate response vehicles on the Maryland highway network in order to minimize expected response times.
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Mccoy, Patrick T., and David J. Mennenga. "Optimum Length of Single-Lane Closures in Work Zones on Rural Four-Lane Freeways." Transportation Research Record: Journal of the Transportation Research Board 1650, no. 1 (1998): 55–61. http://dx.doi.org/10.3141/1650-07.
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The lengths of single-lane closures in work zones on rural four-lane freeways are commonly based on the expected work rate in order to avoid moving the temporary traffic control zone more frequently than once a day and to limit the possibility of interfering with the work activity. However, the analysis presented suggests that this practice may result in single-lane closures that are ( a) longer than the lengths that would minimize the sum of the additional road user and traffic control costs and ( b) shorter than those that would minimize the traffic control cost. The objective of the analysis presented is to determine the optimum length of single-lane closures in long-term-stationary temporary traffic control zones on rural four-lane freeways that minimizes the sum of the additional road user and traffic control costs associated with the temporary traffic control zone. An equation for the optimum length is derived using the methods of calculus. The equation can be used to determine the most cost-effective and the most economical lengths of single-lane closures on rural four-lane freeways.
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Martin, Jose, Alba Rozas, and Alvaro Araujo. "A WSN-Based Intrusion Alarm System to Improve Safety in Road Work Zones." Journal of Sensors 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/7048141.
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Road traffic accidents are one of the main causes of death and disability worldwide. Workers responsible for maintaining and repairing roadways are especially prone to suffer these events, given their exceptional exposure to traffic. Since these actuations usually coexist with regular traffic, an errant driver can easily intrude the work area and provoke a collision. Some authors have proposed mechanisms aimed at detecting breaches in the work zone perimeter and alerting workers, which are collectively called intrusion alarm systems. However, they have several limitations and have not yet fulfilled the necessities of these scenarios. In this paper, we propose a new intrusion alarm system based on a Wireless Sensor Network (WSN). Our system is comprised of two main elements: vehicle detectors that form a virtual barrier and detect perimeter breaches by means of an ultrasonic beam and individual warning devices that transmit alerts to the workers. All these elements have a wireless communication interface and form a network that covers the whole work area. This network is in charge of transmitting and routing the alarms and coordinates the behavior of the system. We have tested our solution under real conditions with satisfactory results.
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Cao, Jin Xin, and Xiao Han Liu. "Research on the Equilibrium Speed-Density Relationship Around Flyover Work Zone." PROMET - Traffic&Transportation 28, no. 3 (2016): 277–89. http://dx.doi.org/10.7307/ptt.v28i3.1892.
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Increasing traffic demand has already reached the capacity of existing traffic facilities in most cities. In order to alleviate the traffic pressure and expand the capacity of the road network, constructing flyovers has become an effective way in most cities in China. During the period of the flyover construction, work zones occupy road space, impact traffic flow characteristics and driver behaviour; therefore, this causes a significant reduction of the capacity. Researching of the traffic flow characteristics during the period of flyover construction can improve traffic organization and traffic safety around work zones. This study analyses the traffic flow characteristics around the flyover work zone based on the site data collected in Hohhot City, China. This study shows that the traditional Logistic model for the equilibrium speed-density relationship is not applied to the traffic flow around the flyover work zone. Based on an in-depth analysis of the traffic flow characteristics and specific driver behaviours, this paper proposes an improved Logistic model to depict the equilibrium speed-density relationship around the flyover work zone. To analyse the mathematical characteristics of the speed-density relationship, this paper proposes a method to insert virtual data points into the initial data, which can make the fit curve be continuous.
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Martínez-Sánchez, J., D. Conde Morales, S. Novoa, and P. Arias. "AN UNMANNED AERIAL SYSTEM FOR ON-THE-EDGE TRAFFIC MONITORING IN WORK-ZONE APPROACH AREA." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-1/W2-2023 (December 13, 2023): 605–10. http://dx.doi.org/10.5194/isprs-archives-xlviii-1-w2-2023-605-2023.
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Abstract. Maintenance works are crucial to improve the reliability and resilience of road infrastructure but, despite efforts to achieve a safer operation, work zones are still risky areas where 4% of all road accidents occur. The main factors that increase the risk during maintenance include the proximity to live traffic, inadequate warning signs and driver behaviour. Intelligent Transportation Systems and their supporting technologies including sensors, data processing and analysis have been beneficial for increasing road safety.In this work, we present the design of a context awareness approach based on an Unmanned Aerial System aimed to detect inadequate speed of incoming traffic approaching to a work zone and to raise warning alerts. To accomplish this objective, an optical payload carrying an on-the-edge analysis system based on deep learning tracking was developed and tested. Preliminary results show the potential of the design to achieve near real-time operation preserving a mean Average Precision similar to that obtained with more complex architectures.
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Shkrabak, Roman Vladimirovich. "Ensuring the safety of the functioning of mobile means of mechanization of vehicles and technological processes of AIC." Agrarian Scientific Journal, no. 3 (March 29, 2021): 94–98. http://dx.doi.org/10.28983/asj.y2021i3pp94-98.
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Agricultural production is distinguished by a variety of activities carried out at all seasons of the year and in almost all soil and climatic zones, producing food products and raw materials. Almost a quarter of the volume of work in various zones of the country falls on transport and technological processes. The latter are characterized by road traffic accidents. Determining among them are vehicle collisions, which are accompanied by severe consequences every year. In 2018 alone, 71167 cases of road accidents due to collisions killed 7671 people and injured 109,717. Authors offered a well-grounded and developed strategy and tactics for the dynamic reduction and elimination of occupational injuries and diseases of people.
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Hua, Wang, Yu, Zhu, and Wang. "Control Strategy Optimization for Two-Lane Highway Lane-Closure Work Zones." Sustainability 11, no. 17 (2019): 4567. http://dx.doi.org/10.3390/su11174567.
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Traffic control is very important for two-lane highway lane-closure work zone traffic management. Control of the open lane’s right of way is very similar to that of a two-phase signalized intersection. Thus, four control strategies including flagger control, pre-timed control proposed by Schonfeld, pre-timed control proposed by Webster, and actuated control are employed for possible use at work zones. Two primary methodologies, the mathematical delay model adopted from signalized intersections, and the simulation model calibrated with field data, are proposed. The simulation and mathematical results show that control strategies for two one-way road intersections could be used for two-lane highway lane-closure work zones. Flagger control after gap-out distance optimization prevails over all the other control strategies in terms of stopped delay, queue length, and throughput, under low or high volumes. Actuated control could be a good alternative for work zone areas due to its small queue length and large vehicle throughput under moderate volume conditions. Our findings may help to optimize the work-zone control strategy and improve operational efficiency at two-lane highway lane-closure work zones.
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Smugala, Stanislav, Darja Kubečková, and František Indra. "The impact of changes in the geological conditions of road bedrock layers while the road was in use." Organization, Technology and Management in Construction: an International Journal 11, no. 1 (2019): 2009–21. http://dx.doi.org/10.2478/otmcj-2019-0008.
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Abstract This article examines the effective road reconstruction technologies applied during construction processes to ensure the required final quality of construction work. The construction quality and especially the overall levelness of roads are influenced by several factors. These factors include high-quality implementation of road structural layers, including active zones, which can be adversely affected by the undisciplined application of technology, insufficient engineering and poor geological surveys. Suitable and effective reconstruction technology provides the required quality of construction work yet does not significantly extend construction time. The authors propose stabilisation using cement or lime during reconstruction. This stabilisation method is used if the structure of the bedrock layers is finely granular. The stabilisation process consists of excavating the unacceptable bedrock layer and mixing it with additives and water. A principally different bedrock stabilisation method consists of completely replacing it with a gravel layer, which is used when individual base layers are diverse and stabilisation using additives would not guarantee the required results, i.e. improved strength characteristics. In some cases, the existing base layers are not suitable for use as road base layers because of their characteristics, such as volumetric instability. For this reason, they must be replaced with more suitable materials. This topic is documented by a practical example.
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Beacher, Andrew G., Michael D. Fontaine, and Nicholas J. Garber. "Field Evaluation of Late Merge Traffic Control in Work Zones." Transportation Research Record: Journal of the Transportation Research Board 1911, no. 1 (2005): 33–41. http://dx.doi.org/10.1177/0361198105191100104.
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The traffic control strategy of the late merge in work zones was devised to improve flow and safety at work zone lane closures. Although some states have put the strategy into practice, only a handful of short-term field studies have formally evaluated its effectiveness. Additional field studies were necessary to assess the efficacy of the strategy and its proper deployment. This paper documents the results of a field test of the late merge traffic control conducted over several months. The late merge strategy was evaluated by comparing its effectiveness with that of traditional plans for work zone lane closures. The field test was conducted on a primary route in Tappahannock, Virginia, at a two-to-one lane closure. Results showed that throughput increased, but the increase was not statistically significant. Likewise, time in queue decreased, but the decrease was not statistically significant. These results were much less dramatic than those of other studies. Possible reasons for this disparity include different driver populations, road types, vehicle mixes, and site-specific characteristics. Despite limited improvements in throughput and time in queue, more drivers were in the closed lane, a positive response to the late merge signs.
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Ambros, Jiří, Richard Turek, Jan Elgner, Zuzana Křivánková, and Veronika Valentová. "Effectiveness Evaluation of Section Speed Control in Czech Motorway Work Zones." Safety 6, no. 3 (2020): 38. http://dx.doi.org/10.3390/safety6030038.
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The goal of section speed control is to increase speed limit compliance in the monitored road sections, decrease speed variance and improve traffic safety. General experience with section speed control on motorways is positive, with significant improvements in both speed and safety performance. The presented study focused on a unique application of section speed control in motorway work zones in the Czech Republic. Effectiveness was monitored (in terms of average speed, speeding and accident rates) in three sections and four time periods (normal operation, work zone, work zone with section speed control, normal operation), which allowed discerning individual effects of work zone and section speed control. In addition, a novel data source—floating car data—was used. Work zones were found to increase accident rates compared to normal operation and decrease with the introduction of section speed control. The effects on average speed, speed variance and speeding were positive, although smaller compared to the studies conducted in non-work zone conditions.
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Yang, Da, Xinpeng Zhao, Yuting Chen, Xi Zhang, and Chongshuang Chen. "Study on the Day-Based Work Zone Scheduling Problem in Urban Road Networks Based on the Day-to-Day Traffic Assignment Model." Transportation Research Record: Journal of the Transportation Research Board 2672, no. 16 (2018): 14–22. http://dx.doi.org/10.1177/0361198118757982.
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Many work zones exist in the urban road network and have a great negative impact on city traffic. Finding the optimal work zone schedule can minimize the negative impact of work zones on traffic. This paper focuses on the day-based work zone scheduling problem in the urban network. Existing studies on the day-based work zone scheduling problem do not consider the progression of day-to-day traffic from a non-equilibrium state to an equilibrium state during the construction period. For the first time, this paper proposes a model for day-based work zone scheduling by introducing a day-to-day traffic assignment model, in which the target of the optimization problem is minimizing the increase in travel cost caused by work zones. Numerical examples are presented to explore the variations of the optimal construction sequence for different work durations, crew numbers, and model parameter values. Some new findings are obtained in the paper. When the construction duration of each work zone is relatively short (for example, less than 20 days), the optimal scheduling will obviously change with the work duration; when all of the construction durations increase to a threshold (for example, 60 days), the optimal construction sequence will no longer change. An optimal crew number exists that can minimize the increment of travel cost caused by work zones. During the construction period, the total travel cost in the network can be decreased by guiding travelers to change their original travel habits.
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Park, Hyun Su, Yong Woo Park, Oh Hoon Kwon, and Shin Hyoung Park. "Applying Clustered KNN Algorithm for Short-Term Travel Speed Prediction and Reduced Speed Detection on Urban Arterial Road Work Zones." Journal of Advanced Transportation 2022 (February 4, 2022): 1–11. http://dx.doi.org/10.1155/2022/1107048.
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This study developed and verified a travel speed prediction model based on the travel speed and work zone statistics collected from the advanced traffic management system (ATMS) real-time data in Daegu, South Korea. A clustered K-nearest neighbors (CKNN) algorithm was used to predict travel speed, resulting in a 6.9% average mean absolute percentage error (MAPE) using the data from 1,815 work zones. Furthermore, road network impact due to road work was calculated by comparing the travel speed prediction results obtained from the historical speed data. The predicted travel speed data in a work zone generated from this study is expected to allow drivers to select optimized paths and use them for traffic management strategies to operate in a work zone efficiently.
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Lee, Hsiao Mun, Heow Pueh Lee, and Zhiyang Liu. "Acoustical Environment Studies in the Modern Urban University Campuses." Acoustics 4, no. 1 (2022): 14–25. http://dx.doi.org/10.3390/acoustics4010002.
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The quality of the acoustic environments at Xi’an Jiatong-Liverpool University (XJTLU) and Soochow University (Dushuhu Campus, SUDC) in Suzhou City were investigated in the present work through real-time noise level measurements and questionnaire surveys. Before commencing the measurements and surveys, these two campuses’ sound sources were summarized and classified into four categories through on-site observation: human-made, machinery, living creatures, and natural physical sounds. For the zones near the main traffic road, with a high volume of crowds and surrounded by a park, sound from road vehicles, humans talking, and birds/insects were selected by the interviewees as the major sound sources, respectively. Only zone 3 (near to a park) at XJTLU could be classified as A zone (noise level < 55 dBA) with an excellent quality acoustical environment. All other zones had either good or average quality acoustical environments, except zone 1 (near to main traffic road) at XJTLU, with a fair-quality acoustical environment.
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Khanfar, Nour O., Huthaifa I. Ashqar, Mohammed Elhenawy, Qinaat Hussain, Ahmad Hasasneh, and Wael K. M. Alhajyaseen. "Application of Unsupervised Machine Learning Classification for the Analysis of Driver Behavior in Work Zones in the State of Qatar." Sustainability 14, no. 22 (2022): 15184. http://dx.doi.org/10.3390/su142215184.
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Work zone areas are commonly known as crash-prone areas. Thus, they usually receive high priority by road operators as drivers and workers have higher chances of being involved in road crashes. The paper aims to investigate driving behavior in work zones using unsupervised machine learning and vehicle kinematic data. A dataset of 67 participants was gathered through an experiment using a driving simulator located at the Qatar Transportation and Traffic Safety Center (QTTSC). The study considered two different work zone scenarios where the leftmost lane was closed for maintenance. In the first scenario, drivers drove on the leftmost lane (Drive 1), while in the second, they drove on the second leftmost lane (Drive 2). The results show that the number of aggressive and conservative drivers was surprisingly more than normal drivers, as most participants either cautiously drove through or failed to drive without being aggressive. The results also show that drivers acted more aggressively in the leftmost lane rather than in the second leftmost lane. We also found that female drivers and drivers with relatively little driving experience were more likely to be aggressive as they drove through a work zone. The framework was found to be promising and can help policymakers take optimal safety countermeasures in work zones during construction.
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Akacem, Mustapha, Moulay Omar Hassan, Driss Djafari, and Mohammed Abbou. "Valuation of Local Materials in Road Construction in Arid Zones." Algerian Journal of Renewable Energy and Sustainable Development 3, no. 2 (2021): 115–31. http://dx.doi.org/10.46657/ajresd.2021.3.2.1.
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The materials constituting the pavement bodies, until today, have been limited to certain so-called noble materials (rolled sands, aggregates, etc.), but these are in the process of being exhausted under the effect of intensive exploitation and the scarcity of quality quarries. With the objective of preserving the deposits of aggregates in the process of exhaustion for future generations and of exploiting the aeolian sands in abundance in the regions of southern Algeria, we aim to enhance the latter in the body of the roadway mixed with the tuffs, this would imply a reduction in construction costs (use of local aggregates of lower quality available in large quantities, reduction in transport costs). From an environmental point of view, this would limit the impacts with a reduction in CO2 emissions linked to transport. In this work, we applied a new approach based on the technique of mixtures to valorize and exploit the sand of dunes existing in abundance, with the treatment in hydraulic binders, which allowed us to go up to 20% of sand dunes
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Aagash A., Rijo, Farhan B., Rahul Bright Prince B, and Ashly Beby M.L. "A low-cost Wi-Fi Enabled Vehicle Speed Management System." Irish Interdisciplinary Journal of Science & Research 08, no. 02 (2024): 123–31. http://dx.doi.org/10.46759/iijsr.2024.8214.
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This proposed work presents the WiFi technology-based approach for dual WiFi module-based vehicle speed governance in the fledgling zones. The second WiFi module should be inside the car and the centralized transmitter in the middle of the limited area. The transmitter device sends speed limits and other information to the receiver unit, which dynamically controls speed within the zone. The WiFi transmitter acts as a command and control station and continuously reports zone-based enforcement and maximum value criteria. It meets the same standards with innovative algorithms that adapt to road conditions. The receiver module immobilizes the vehicle, so take action and spend to maintain the signaled speed. The scheme includes real-time data transmission and road condition adaptation. The WiFi-based system allows for scalable and low-cost speed restrictions in limited zones. Simulations and field tests show the system can reduce traffic, improve road safety, and boost transportation efficiency. Our road map may include adding sensors and communication protocols to position our system for any use case and increase its capability. Finally, using dual WiFi modules as vehicle speed control systems in restricted areas could solve traffic issues and defragment the transportation network. This paper is a positive step toward using technology to improve road safety and urban mobility.
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Meyer, Eric. "Evaluation of Orange Removable Rumble Strips for Highway Work Zones." Transportation Research Record: Journal of the Transportation Research Board 1715, no. 1 (2000): 36–42. http://dx.doi.org/10.3141/1715-06.
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Rumble strips can be effective in alerting drivers to road conditions that merit special attention. The Kansas Department of Transportation (KDOT) requires the deployment of rumble strips on state routes during maintenance work that necessitates the closure of a lane on a two-lane highway. In such a case, a temporary signal is placed at each end of the work zone, and rumble strips are used to alert drivers that they may need to stop. Currently, cold-mix asphalt is used to create the rumble strips. A new product, orange removable rumble strips, promises to reduce significantly the effort required to apply and to remove rumble strips, while improving safety by increased conspicuity. These removable rumble strips were evaluated at a bridge repair site in rural Kansas. Vehicle speeds were recorded with only the standard asphalt rumble strips in place; then the removable rumble strips were installed and more speed data were collected. Installation and removal times also were compared. Strips were easily applied and easily removed. The audible and tactile effects of the strips were weak due to their 3.2-mm (1/8-in.) thickness in comparison with the 12.7 to 19 mm (1/2 to 3/4 in.) thickness of standard asphalt rumble strips. However, the orange removable rumble strips were found to have a significant effect on vehicle speeds, attributable to their high visibility. KDOT plans to conduct another evaluation using a version of the same device that is 20 percent thicker.
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Zuniga-Garcia, Natalia, Randy B. Machemehl, Nabeel A. Khwaja, Kristopher D. Pruner, and Mengyu Fu. "Estimation of Road User Costs for Work Zones in Data-Limited or Time-Constrained Environments." Journal of Construction Engineering and Management 147, no. 3 (2021): 04020182. http://dx.doi.org/10.1061/(asce)co.1943-7862.0001987.
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