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Relevant bibliographies by topics / Highway capacity Highway capacity Traffic flow Traffic flow Traffic congestion Traffic congestion bottlenecks / Journal articles

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Journal articles on the topic 'Highway capacity Highway capacity Traffic flow Traffic flow Traffic congestion Traffic congestion bottlenecks'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Kondyli, Alexandra, David K. Hale, Mohamadamin Asgharzadeh, Bastian Schroeder, Anxi Jia, and Joe Bared. "Evaluating the Operational Effect of Narrow Lanes and Shoulders for the Highway Capacity Manual." Transportation Research Record: Journal of the Transportation Research Board 2673, no. 10 (2019): 558–70. http://dx.doi.org/10.1177/0361198119849064.

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Unnecessary traffic delays and vehicle emissions have adverse effects on quality of life. To solve the traffic congestion problem in the U.S.A., mitigation or elimination of bottlenecks is a top priority. Agencies across the U.S.A. have deployed several congestion mitigation strategies, such as lane and shoulder width reduction, which aim to adding lanes without significantly altering the footprint of the freeway. A limited number of studies have evaluated the operational benefits of lane narrowing. Although the Highway Capacity Manual does account for lane and shoulder widths, the adjustments

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Ilicali, Mustafa, Necati Catbas, Mehmet Kiziltas, and Aybike Ongel. "Multimodal Transportation Issues in Istanbul: A Case Study for Traffic Redistribution due to Long Span Bridge Rehabilitation." Advanced Materials Research 831 (December 2013): 413–17. http://dx.doi.org/10.4028/www.scientific.net/amr.831.413.

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In this paper, the use of multimodal transportation systems for Istanbul was reviewed. It was seen that there is a high imbalance towards the use of highway transportation. Especially, the marine and the railroad lines are underutilized and have not developed properly over the years. Due to extensive use of highway transportation, inter-and intra-city traffic experiences extensive congestions, delays, time and monetary losses. One of the bottlenecks of this congestion is at the Bosphorus Straight where there are two long span bridges. Recently, one of the bridges on the strait, Fatih Sultan Me

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CHEN, KAI, KIA MAKKI, and NIKI PISSINOU. "MACHINE LEARNING ON CONGESTION ANALYSIS BASED REAL-TIME NAVIGATION SYSTEM." International Journal on Artificial Intelligence Tools 20, no. 04 (2011): 753–81. http://dx.doi.org/10.1142/s0218213011000346.

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In the metropolitan region, most congestion or traffic jams are caused by the uneven distribution of traffic flow that creates bottleneck points where the traffic volume exceeds the road capacity. Additionally, unexpected incidents are the next most probable cause of these bottleneck regions. Moreover, most drivers are driving based on their empirical experience without awareness of real-time traffic situations. This unintelligent traffic behavior can make the congestion problem worse. Prediction based route guidance systems show great improvements in solving the inefficient diversion strategy

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Mufhidin, Amar, and Eviani Subiastuti. "Traffic Analysis Due To Development on Off Ramp Becakayu Highway." IJTI (International Journal of Transportation and Infrastructure) 4, no. 1 (2020): 36–43. http://dx.doi.org/10.29138/ijti.v4i1.1163.

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The kalimalang highway is a connecting road between the city of Jakarta and Bekasi, the high mobility of passenger vehicles and goods is a problem of congestion that must be minimized. The volume of vehicles on the Kalimalang highway has increased quite high each year, but this has not been matched by growth in capacity. Therefore the government plants to build the Becakayu toll road to reduce congestion. This study aims to determine bottlenecks that occur due to the construction of an off-ramp on the Becakayu toll road, especially in section 2A, which is located on Jl. Veteran, while the loca

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Lagerev, Roman, Denis Kapski, Marija Burinskienė, and Andrius Barauskas. "REDUCING A POSSIBILITY OF TRANSPORT CONGESTION ON FREEWAYS USING RAMP CONTROL MANAGEMENT." Transport 32, no. 3 (2017): 314–20. http://dx.doi.org/10.3846/16484142.2017.1336643.

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Merge junctions are the key elements in the freeway system, as they are likely to function as bottlenecks. Investigations into breakdown occurrence at ramp junctions have demonstrated that when the groups of several vehicles following each other enter the freeway from the ramp, they are expected to create ‘turbulence’ resulting from lane changes, decelerations of vehicles on the mainline and inevitably by the cars merging from the on-ramp. This turbulence can lead to breakdown when the level of mainline demand is adequately high. In other words, the impact of a ramp vehicle on capacity is high

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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 tha

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Kerner, Boris S. "Theory of Breakdown Phenomenon at Highway Bottlenecks." Transportation Research Record: Journal of the Transportation Research Board 1710, no. 1 (2000): 136–44. http://dx.doi.org/10.3141/1710-16.

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On the basis of an empirical study of congestion occurring at a freeway bottleneck, it is shown that the congested regime can exist under a large variation of the discharge flow rate downstream of the bottleneck. This variation can be from about 1,600 to 1,700 vehicles/h to 2,600 to 2,700 vehicles/h per lane. A criticism of the application of queuing theories for the description of traffic pattern features is given. An explanation is given of the features of a congested regime on the basis of the recently discovered properties of synchronized flow as a new traffic phase.

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Broeren, Patrick T. W., and Dirk Westland. "Traffic Flow Control in Congested Motorway Networks Using Buffers." Transportation Research Record: Journal of the Transportation Research Board 1612, no. 1 (1998): 34–41. http://dx.doi.org/10.3141/1612-05.

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Around large urban areas, daily recurrent congestion in the form of queueing at bottlenecks is nowadays a normal pattern. Apart from the congestion that directly follows from the capacity deficit at bottlenecks, more and more motorways are affected by a secondary congestion problem due to blocking of motorway exits and entries by long queues that build up upstream of bottlenecks, causing delay to travelers who are not going through the bottleneck. A solution to avoid congestion-induced blockage is the construction of so-called buffer facilities. These are local widenings of the motorway by add

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Wang, Li, Shimin Lin, Jingfeng Yang, et al. "Dynamic Traffic Congestion Simulation and Dissipation Control Based on Traffic Flow Theory Model and Neural Network Data Calibration Algorithm." Complexity 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/5067145.

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Traffic congestion is a common problem in many countries, especially in big cities. At present, China’s urban road traffic accidents occur frequently, the occurrence frequency is high, the accident causes traffic congestion, and accidents cause traffic congestion and vice versa. The occurrence of traffic accidents usually leads to the reduction of road traffic capacity and the formation of traffic bottlenecks, causing the traffic congestion. In this paper, the formation and propagation of traffic congestion are simulated by using the improved medium traffic model, and the control strategy of c

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Zanjad, Shradha S. "An Efficient Scheduling of Flyover at Grade Intersection under Mixed Traffic Environment." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 824–33. http://dx.doi.org/10.22214/ijraset.2021.36484.

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A flyover is a bridge constructed along an intersecting highway over an at-grade intersection. It allows two –direction traffic to flow at free flow speed on the bridge. The flyover is one of the methods for solving traffic problems at at-grade junctions on highways including capacity, congestion, long delay and queue length. Traffic signalization at the upgraded intersection often uses the same fixed time control plans, even after the installation of a flyover over the intersection. Most of the flyovers in India are constructed at the junctions on highway bypasses of big cities. The present w

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Liu, Yugang, Hongbo Yi, Jiali Li, Bin Chen, and Hongtai Yang. "Design and Control Method of Switchable On- or Off-Ramp for Urban Highway." Journal of Advanced Transportation 2020 (September 1, 2020): 1–10. http://dx.doi.org/10.1155/2020/7375416.

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High volume of traffic is loaded on urban highway during peak hours as well as the ramp connecting main road and auxiliary road of highway. Once the demand exceeds the capacity of the ramp, congestion may happen on both main road and the auxiliary road. To deal with this problem, an new urban highway ramp, switchable ramp (SR) that can switch between on and off condition, is proposed in this paper. A macroscopic time-space discrete model is built in this paper to model this process by dividing the studied time period into short time periods and the studied road segment into small sections. The

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Suthanaya, Putu Alit, and Ngurah Upadiana. "Traffic management of Udayana University Sudirman campus intersection using Vissim software." MATEC Web of Conferences 276 (2019): 03006. http://dx.doi.org/10.1051/matecconf/201927603006.

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The city of Denpasar is the capital of Bali Province, as well as the centre of various activities including government offices, hospitals, schools/ universities, trade and services, as well as tourism. Traffic congestion in the city of Denpasar is increasing from year to year, especially at the point of the intersection node, such as at the signalised intersection of Udayana University Sudirman Campus. The high trip attraction to Udayana University Campus has exacerbated the congestion of the intersection. The purpose of this study was to examine an alternative to managing the traffic flow usi

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Winaya, Amrita. "On-Street Parking and Traffic Flow Performance at Kapasan Shopping Area Surabaya." Journal of Advanced Civil and Environmental Engineering 3, no. 1 (2020): 9. http://dx.doi.org/10.30659/jacee.3.1.9-16.

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Traffic congestion is a problem that is often faced by Indonesian big cities. It is related to land use in an area that causes on-street parking. The main cause is the imbalance between demand and supply, namely the need for parking during rush hour exceeds the capacity of existing parking. Another consequence is the increasing of side barriers resulting in the delays on certain roads. Shopping area in Jl.Kapasan, Surabaya is one of the densely areas attracted most people of Surabaya to conduct trading activities and shopping for daily needs. The denstiy of this region will affect the performa

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Kerner, Boris S. "Empirical Features of Congested Patterns at Highway Bottlenecks." Transportation Research Record: Journal of the Transportation Research Board 1802, no. 1 (2002): 145–54. http://dx.doi.org/10.3141/1802-17.

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An empirical study was undertaken of congested patterns at highway bottlenecks. On the basis of statistical data it was found that the spatialtemporal structure of congested patterns possesses some predictable features. From these features a classification of congested patterns was made. It was found that the most frequently observed congested pattern is the general pattern (GP). In GP synchronized flow occurs upstream of a bottleneck and wide moving jams spontaneously emerge in that synchronized flow. Capacity in free flow can be about twice as high as capacity in congested traffic upstream o

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Zaenal Muttaqin, Muchammad, and Desi Yanti Futri Citra Hasibuan. "Traffic Assessment for Unsignalized Intersection Under Influence for Side Friction on Padang Lawas, North Sumatera." Journal of Innovation and Technology 1, no. 2 (2020): 1–7. http://dx.doi.org/10.31629/jit.v1i2.3165.

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An unsignalized intersection is a part of a road where currents from different directions or directions meet. There was a conflict between currents from theopposite direction and intersecting each other, resulting in congestion along the arms of the intersection. Likewise, at the intersection of four arms without a signal at Sibuhuan Market, Padang Lawas Regency, North Sumatra, there is a congestion caused by the reduction in the effective width of the road due to parking on the road. At the intersection of four arms without a signal at Sibuhuan Market, Padang Lawas Regency, North Sumatra, the

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Subraveti, Hari Hara Sharan Nagalur, Victor L. Knoop, and Bart van Arem. "Improving Traffic Flow Efficiency at Motorway Lane Drops by Influencing Lateral Flows." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 11 (2020): 367–78. http://dx.doi.org/10.1177/0361198120948055.

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Lane drops are a common bottleneck source on motorway networks. Congestion sets in upstream of a lane drop as a result of the lane changing activity of merging vehicles. This causes the queue discharge rate at the bottleneck to decrease and drop below the capacity, leading to capacity drop and further congestion. The objective of this study is to minimize the total travel time of the system by controlling lateral flows upstream of the lane drop. This is equivalent to maximizing the exit flows at the bottleneck. An optimization problem is formulated for a 3–2 lane drop section with high inflow.

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17

de Andrade, Gustavo Riente, Zhibin Chen, Lily Elefteriadou, and Yafeng Yin. "Multiclass Traffic Assignment Problem with Flow-Dependent Passenger Car Equivalent Value of Trucks." Transportation Research Record: Journal of the Transportation Research Board 2667, no. 1 (2017): 131–41. http://dx.doi.org/10.3141/2667-13.

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This paper develops and analyzes a multiclass traffic assignment model considering the flow-dependent passenger car equivalent (PCE) value of trucks based on the latest Highway Capacity Manual (HCM, 6th edition) and explores the properties of the proposed model to provide guidance on related planning applications. HCM discrete values of truck PCEs are fitted by power functions for combinations of link grades and lengths, which have been found to produce high coefficients of determination ( R2) in all cases. With the established fitting functions, the multiclass traffic assignment problem is fo

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Hamad, Khaled, and Shinya Kikuchi. "Developing a Measure of Traffic Congestion: Fuzzy Inference Approach." Transportation Research Record: Journal of the Transportation Research Board 1802, no. 1 (2002): 77–85. http://dx.doi.org/10.3141/1802-10.

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Many measures have been proposed to represent the status of traffic conditions on arterial roadways in urban areas. The debate about what is the most appropriate measure continues. In a contribution to the debate, another approach was offered. Traditionally, two general approaches exist. One is based on the relationship between supply and demand. The other is a measure relative to the most acceptable status of service quality. The latter measure allows the public to relate to their travel experience. In either case, however, derivation of measures of congestion involves uncertainty because of

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Chen, Chen, Chiu Liu, and Zhongren Wang. "New approach to determine number of lanes on freeway upgrades." Canadian Journal of Civil Engineering 35, no. 10 (2008): 1033–41. http://dx.doi.org/10.1139/l08-048.

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A slow-moving heavy vehicle can substantially reduce traffic flow because the vehicle acts as a moving bottleneck. In particular, the bottleneck can be initiated on a long uphill freeway section where heavy trucks gain little acceleration and propagate upstream when the percentage of loaded trucks in the traffic is high. This paper finds an interesting relation between the bottlenecks and some physical factors including heavy vehicle characteristics, road geometry, traffic flow theory, and percentage of trucks in traffic. According to this relation, the paper provides two dimensionless physica

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Wei, Leyu, Jinliang Xu, Tian Lei, Menghui Li, Xingliang Liu, and Haoru Li. "Simulation and Experimental Analyses of Microscopic Traffic Characteristics under a Contraflow Strategy." Applied Sciences 9, no. 13 (2019): 2651. http://dx.doi.org/10.3390/app9132651.

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Contraflow is a common traffic strategy used to improve the capacity of outbound roads during mass evacuation. Previous studies have focused on the contraflow network configuration, travel time, and number of evacuated vehicles on a macroscopic level. Only a few researchers have considered microscopic factors, such as the contraflow characteristics and moving bottlenecks caused by coaches and trucks. In this study, the effects of the contraflow strategy were investigated through field experiments and traffic simulations. Traffic data were collected from highway segments where trucks were forbi

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Al-Kaisy, A., J. A. Stewart, and M. Van Aerde. "A simulation approach for examining capacity and operational performance at freeway diverge areas." Canadian Journal of Civil Engineering 26, no. 6 (1999): 760–70. http://dx.doi.org/10.1139/l99-038.

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Freeway diverge areas, and particularly those in the proximity of exit ramps, are often viewed as potential bottlenecks in freeway operations. The existing diverge procedures within the 1994 and 1997 Highway Capacity Manual updates are limited in that they do not provide a direct estimate of freeway capacity nor do they model performance at oversaturated traffic conditions. Moreover, a parallel investigation on these procedures revealed some inconsistencies in predicting measures of performance at those critical areas. This paper describes the use of computer traffic simulation to explore the

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JIA, BIN, RUI JIANG, and QING-SONG WU. "THE TRAFFIC BOTTLENECK EFFECTS CAUSED BY THE LANE CLOSING IN THE CELLULAR AUTOMATA MODEL." International Journal of Modern Physics C 14, no. 10 (2003): 1295–303. http://dx.doi.org/10.1142/s012918310300542x.

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As a kind of bottleneck, the lane closing has seldomly been investigated with cellular automata model. In this paper, we study this issue using the cellular automata traffic flow model. The capacity and the density distribution of this kind of bottleneck are discussed in details. We find that (i) the capacity of the bottleneck is a little smaller than the maximum flow rate of single-lane road; (ii) different regulations may lead to different density distributions of the vehicles upstream of the lane closing. Moreover, the density inversion phenomenon is reported under certain conditions. This

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LAFLAMME, Eric M., and Paul J. OSSENBRUGGEN. "Estimation of stochastic traffic capacity using extreme value theory and censoring: A case study in Salem, New Hampshire." Archives of Transport 4, no. 48 (2018): 61–75. http://dx.doi.org/10.5604/01.3001.0012.8366.

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In this work, we introduce a method of estimating stochastic freeway capacity using elements of both extreme value theory and survival analysis. First, we define capacity data, or estimates of the capacity of the roadway, as the daily maximum flow values. Then, under a survival analysis premise, we introduce censoring into our definition. That is, on days when flows are sufficiently high and congestion occurs, corresponding flow maxima are considered true estimates of capacity; otherwise, for those days that do not observe high flows or congestion, flow maxima are deemed censored observations

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Vaziri, Manouchehr. "Development of Highway Congestion Index with Fuzzy Set Models." Transportation Research Record: Journal of the Transportation Research Board 1802, no. 1 (2002): 16–22. http://dx.doi.org/10.3141/1802-03.

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Development of a highway congestion index on the basis of expert and user opinions with fuzzy set theory was attempted. Forty 1-min videotape segments showing different highway traffic flow conditions were displayed to a group of highway experts and users. They were asked to complete the relevant questionnaires on the existence and acceptability of congestion for each video segment display. Five congestion-descriptive variables of travel speed, travel rate, delay rate, travel rate ratio, and delay ratio were determined for each video segment. Information about the values of congestion-descript

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Kshash, Salih Suliman. "Evaluation the Performance of Al-Horh Signalized Intersection Using ArcGIS (ModelBuilder)." Wasit Journal of Engineering Sciences 5, no. 1 (2017): 132–53. http://dx.doi.org/10.31185/ejuow.vol5.iss1.70.

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Signalized intersections are key elements in the urban transportation network where carry heavy traffic of motorized and non-motorized vehicles and pedestrians the intersection during peak periods. Intersection congestion is expressed in terms of level of service (LOS) as defined by the Highway Capacity Manual (HCM).Level of service is defined in terms of delay and ranges from LOS A (free-flow conditions) to LOS F (long delays). Delay represents an average stopped delay per vehicle fora 15-minute analysis period. The objective of this paper is to evaluate the operational capacity of inte

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Dwi Ratnaningsih, Rudy Ariyanto, Supiyono,. "PENGARUH KEMACETAN DI SIMPANG CILIWUNG TERHADAP DERAJAD PELAYANAN DI SIMPANG PROGRESIF." PROKONS Jurusan Teknik Sipil 11, no. 1 (2018): 1. http://dx.doi.org/10.33795/prokons.v11i1.121.

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Abstract Highway in Malang there that needs to be analyzed is Intersections Letjend S. Parman Street – Ciliwung Street and Letjend Sutoyo Street – Letjend Selorejo. The road is an arterial road in the city of Malang with a high vehicle density level (Saputra, 2013). The Street was a high traffic flow led to queues or long saturated flow that is not supported by the settings of the light signals in accordance with the conditions in the field so often causes congestion. From finding a solution the traffic density in the study Letjend S Parman Street – Ciliwung Street and Letjend Sutoyo Street –

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Jiang, Yan Qun, and Peng Zhang. "Macroscopic Simulation of Pedestrian Flow through a Bottleneck." Applied Mechanics and Materials 97-98 (September 2011): 1168–75. http://dx.doi.org/10.4028/www.scientific.net/amm.97-98.1168.

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The paper deals with the macroscopic type modelling of the unidirectional pedestrian flow moving through a corridor with a bottleneck. The macroscopic model of pedestrian flow is the two-dimensional Lighthill-Whitham-Richards model described as a mass conservation equation. The characteristic feature of pedestrian route choice is that pedestrians in the corridor try to minimize the instantaneous travel time and improve the comfort level. The model equation is solved numerically by the discontinuous Galerkin method. Numerical results visualize the ability of the model to predict macroscopic cha

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Zhou, Guiliang, Lina Mao, Huimin Cao, Pengsen Hu, and Xu Bao. "Dynamic Allocation Model for Reversible Lanes in the Intelligent Vehicle Infrastructure Cooperative System." Journal of Advanced Transportation 2021 (June 29, 2021): 1–14. http://dx.doi.org/10.1155/2021/9997142.

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The real-time dynamic control of reversible lanes is an effective measure to alleviate the traffic congestion caused by the directional imbalance of the traffic flow and improve the utilization rate of urban road resources. This paper proposes a dynamic allocation model for reversible lanes for road sections and intersections in the intelligent vehicle infrastructure cooperative system (IVICS). The dynamic lane allocation model for the road sections is constructed based on the Bureau of Public Road (BPR) function, in which the 24 hours of the day are divided into stages, the traffic volume and

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Hawinuti, Riska. "Pengaruh Supeltas Terhadap Tingkat Pelayanan Simpang Jalan Trans Kalimantan-Komplek Griya Permata." Jurnal Gradasi Teknik Sipil 2, no. 2 (2018): 36–44. http://dx.doi.org/10.31961/gradasi.v2i2.606.

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The appearanced of the peoples called “Supeltas" (Sukarelawan Pengatur lalulintas=Traffic Regulatory Volunteers) occurs along with the increasing number of queue vehicles that will turn towards the road. Supeltas itself is persons (not official from the government) who manage traffic flow expecting voluntari giffts from people passing through the road. Often, these activities broke the road rules and exacerbate existing congestion. The purpose of this study was to compare the performance of unsignalizes intersections between the existing and non-existent of "Supeltas" it self. The requir

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Wang, Yi, Jian Rong, Chenjing Zhou, Xin Chang, and Siyang Liu. "An Analysis of the Interactions between Adjustment Factors of Saturation Flow Rates at Signalized Intersections." Sustainability 12, no. 2 (2020): 665. http://dx.doi.org/10.3390/su12020665.

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An insufficient functional relationship between adjustment factors and saturation flow rate (SFR) in the U.S. Highway Capacity Manual (HCM) method increases an additional prediction bias. The error of SFR predictions can reach 8–10%. To solve this problem, this paper proposes a comprehensive adjusted method that considers the effects of interactions between factors. Based on the data from 35 through lanes in Beijing and 25 shared through and left-turn lanes in Washington, DC, the interactions between lane width and percentage of heavy vehicles and proportion of left-turning vehicles were analy

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Bassan, Shy, and Abishai Polus. "Meaning of actual capacity of freeways and its estimation." Canadian Journal of Civil Engineering 37, no. 1 (2010): 77–87. http://dx.doi.org/10.1139/l09-123.

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The flow on urban and suburban freeways is characterized typically by high densities, occupancies, and frequent breakdowns, particularly when the volume approaches capacity. This creates unstable flow conditions, resulting in recurrent as well as random congestion. The purpose of this study was twofold: (1) to develop models for evaluating flow characteristics on a busy suburban freeway, specifically speed versus flow and flow versus occupancy; (2) to understand the meaning of capacity by evaluating the actual capacity of a freeway section. The data were collected on Highway 1 in Israel and on

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Jurnal, Redaksi Tim. "ANALISA KINERJA PERSIMPANGAN BERSINYAL PADA PERSIMPANGAN ANGKATAN 66 DAN RUAS JALAN R. SOEKAMTO KOTA PALEMBANG." Forum Mekanika 6, no. 2 (2018): 124–36. http://dx.doi.org/10.33322/forummekanika.v6i2.116.

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Transportation is a very important and strategic means to facilitate the movement in an effort to meet the needs of the community. Planning and construction of transportation facilities and infrastructure, greatly influence in determining the increase of economic growth in supporting the achievement of development targets. The real impact that occurs as a result of rapid economic growth, population growth, and changes in land use affects the performance of intersections and roads, especially the problem of congestion, delays, queues opportunities and other issues. Based on the result of calcul

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Pratama, Muhammad Daryl Marta, and Elkhasnet Elkhasnet. "Analisis Kinerja Simpang Tak Bersinyal Jalan A.H. Nasution dan Jalan Cikadut, Kota Bandung. (Hal. 116-123)." RekaRacana: Jurnal Teknil Sipil 5, no. 2 (2019): 116. http://dx.doi.org/10.26760/rekaracana.v5i2.115.

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ABSTRAKPersimpangan merupakan suatu bagian jalan yang menjadi pusat pertemuan dari berbagai pergerakan arus lalu lintas. Pada tipe simpang tak bersinyal, sering dijumpai titik-titik konflik arus lalu lintas yang mengakibatkan kemacetan arus lalu lintas terutama pada saat jam-jam sibuk. Contoh kasus terdapat di Kota Bandung, terjadi pada persimpangan Jalan A.H. Nasution dan Jalan Cikadut. Lokasi ini dipilih karena selain kemacetan yang disebabkan oleh titik-titik konflik arus lalu lintas yang tidak teratur pada saat jam sibuk, di sekitar jalan pada simpang ini juga merupakan kawasan pertokoan,

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Hidalgo, Carlos, Ray Lattarulo, Carlos Flores, and Joshué Pérez Rastelli. "Platoon Merging Approach Based on Hybrid Trajectory Planning and CACC Strategies." Sensors 21, no. 8 (2021): 2626. http://dx.doi.org/10.3390/s21082626.

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Currently, the increase of transport demands along with the limited capacity of the road network have increased traffic congestion in urban and highway scenarios. Technologies such as Cooperative Adaptive Cruise Control (CACC) emerge as efficient solutions. However, a higher level of cooperation among multiple vehicle platoons is needed to improve, effectively, the traffic flow. In this paper, a global solution to merge two platoons is presented. This approach combines: (i) a longitudinal controller based on a feed-back/feed-forward architecture focusing on providing CACC capacities and (ii) h

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Cottrell, Wayne D. "Estimating the Probability of Freeway Congestion Recurrence." Transportation Research Record: Journal of the Transportation Research Board 1634, no. 1 (1998): 19–27. http://dx.doi.org/10.3141/1634-03.

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The 1991 Intermodal Surface Transportation Efficiency Act, along with the National Highway System Designation Act of 1995, mandated that congestion management systems be established in urbanized areas with population of 200,000 or more. The mandate created a need for congestion monitoring. A 1995 informal national survey of transportation agencies by FHWA indicated a need for tools to evaluate the impacts of remedial strategies. Further, some agencies have sponsored research on topics such as congestion thresholds and measurement methods. This paper proposes a model that estimates the probabil

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Seraj, Mudasser, and Tony Z. Qiu. "Multilane Microscopic Modeling to Measure Mobility and Safety Consequences of Mixed Traffic in Freeway Weaving Sections." Journal of Advanced Transportation 2021 (July 14, 2021): 1–21. http://dx.doi.org/10.1155/2021/6639649.

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Weaving sections are components of highway networks that introduce a heightened likelihood for bottlenecks and collisions. Automated vehicle technology could address this as it holds considerable promise for transportation mobility and safety improvements. However, the implications of combining automated vehicles (AuVs) with traditional human-driven vehicles (HuVs) in weaving freeway sections have not been quantitatively measured. To address this gap, this paper objectively experimented with bidirectional (i.e., longitudinal and lateral) motion dynamics in a microscopic modeling framework to m

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Nezafat, Reza Vatani, Ehsan Beheshtitabar, Mecit Cetin, Elizabeth Williams, and George F. List. "Modeling and Evaluating Traffic Flow at Sag Curves When Imposing Variable Speed Limits on Connected Vehicles." Transportation Research Record: Journal of the Transportation Research Board 2672, no. 20 (2018): 193–202. http://dx.doi.org/10.1177/0361198118784169.

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Sag curves, road segments where the gradient changes from downwards to upwards, generally reduce the roadway capacity and cause congestion. This results from a change in longitudinal driving behavior when entering a sag curve as drivers tend to reduce speeds or increase headways as vehicles reach the uphill section. In this research, a control strategy is investigated through manipulating the speed of connected vehicles (CVs) in the upstream of the sag curve to avoid the formation of bottlenecks caused by the change in driver behavior. Traffic flow along a sag curve is simulated using the inte

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Zou, Qingru, Xiangming Yao, Peng Zhao, Fei Dou, and Taoyuan Yang. "Managing Recurrent Congestion of Subway Network in Peak Hours with Station Inflow Control." Journal of Advanced Transportation 2018 (2018): 1–16. http://dx.doi.org/10.1155/2018/6931025.

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Station inflow control (SIC) is an important and effective method for reducing recurrent congestion during peak hours in the Beijing, Shanghai, and Guangzhou subway systems. This work proposes a practical and efficient method for establishing a static SIC scheme in normal weekdays for large-scale subway networks. First, a traffic assignment model without capacity constraint is utilized to determine passenger flow distributions on the network. An internal relationship between station inflows and section flows is then constructed. Second, capacity bottlenecks are identified by considering the tr

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Djamaluddin, Said, Adella Hotnyda Siregar, and Pungkas Hendratmoko. "Volume dan Kapasitas Jaringan Jalan di Kawasan Pondok Labu." JURNAL MANAJEMEN TRANSPORTASI DAN LOGISTIK 2, no. 2 (2017): 199. http://dx.doi.org/10.25292/j.mtl.v2i2.123.

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The intent of this study to analyze the optimization of highway network of hospitals Fatmawati to Pondok Labu (UPN “Veteran“ Jakarta). Especially for measuring the ratio of the volume and capacity (V/C) of the facilities and infrastructure, given the congestion level above the tolerance within 2-3 km of the RS Fatmawati-UPN "Veteran" Jakarta, takes 2-3 hours the goal is to repair the target to be achieved to make people gain easy mobility around Pondok Labu Fatmawati according to their desired travel. Some of the recommendations suggested by research, must make a one-way flow (OWF) in the morn

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Wang, Yi, Jian Rong, Chenjing Zhou, and Yacong Gao. "Dynamic Estimation of Saturation Flow Rate at Information-Rich Signalized Intersections." Information 11, no. 4 (2020): 178. http://dx.doi.org/10.3390/info11040178.

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Intersections are the bottlenecks of the road network. The capacity of signalized intersections restricts the operation of the road network. Dynamic estimation of capacity is necessary for signalized intersections refined management. With the development of technology, more and more detectors were installed near the intersection. It had been the information-rich environment, which provided support for dynamic estimation of capacity. A dynamic estimation method for a saturation flow rate based on a neural network was developed. It would grasp the dynamic change of saturation flow rates and infl

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Brennan, Thomas M., Stephen M. Remias, and Lucas Manili. "Performance Measures to Characterize Corridor Travel Time Delay Based on Probe Vehicle Data." Transportation Research Record: Journal of the Transportation Research Board 2526, no. 1 (2015): 39–50. http://dx.doi.org/10.3141/2526-05.

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Anonymous probe vehicle data are being collected on roadways throughout the United States. These data are incorporated into local and statewide mobility reports to measure the performance of highways and arterial systems. Predefined spatially located segments, known as traffic message channels (TMCs), are spatially and temporally joined with probe vehicle speed data. Through the analysis of these data, transportation agencies have been developing agencywide travel time performance measures. One widely accepted performance measure is travel time reliability, which is calculated along a series o

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Preston, Geoffrey C., Phillip Horne, Maria Paola Scaparra, and Jesse R. O’Hanley. "Masterplanning at the Port of Dover: The Use of Discrete-Event Simulation in Managing Road Traffic." Sustainability 12, no. 3 (2020): 1067. http://dx.doi.org/10.3390/su12031067.

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The Port of Dover is Europe’s busiest ferry port, handling £119 billion or 17% of the UK’s annual trade in goods. The Port is constrained geographically to a small area and faces multiple challenges, both short- and long-term, with managing the flow of five million vehicles per year to/from mainland Europe. This article describes some of the work that the Port is doing to minimize the impact of port road traffic on the local community and environment using discrete-event simulation modeling. Modeling is particularly valuable in identifying where future bottlenecks are likely to form within the

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Jakulytė, Sandra, and Virgaudas Puodžiukas. "ŽIEDINIŲ SANKRYŽŲ ANALIZĖ IR REKOMENDACIJOS JOMS TAIKYTI LIETUVOS VALSTYBINĖS REIKŠMĖS MAGISTRALINIUOSE IR KRAŠTO KELIUOSE / ANALYSIS OF ROUNDABOUTS AND RECOMMENDATIONS FOR THEIR USE IN LITHUANIAN MAIN AND NATIONAL ROADS." Mokslas - Lietuvos ateitis 10 (July 5, 2018): 1–8. http://dx.doi.org/10.3846/mla.2018.3264.

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Usually, during the implementing the traffic safety policy, it is often decided to install a roundabout at an emergency junction. The reason is that roundabouts have long been considered the safest intersections due to the low number of conflict points and features to reduce vehicle speed. Unfortunately, the design of circular junctions is a responsible process, during which it is necessary to take into account not only the indicators of traffic safety but also the functional purpose of the road. It is known that the roads are classified according to their functional purpose into 3 groups: tra

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Zhou, Jianan, Laurence Rilett, and Elizabeth Jones. "Sensitivity Analysis of Speed Limit, Truck Lane Restrictions, and Data Aggregation Level on the HCM-6 Passenger Car Equivalent Estimation Methodology for Western U.S. Conditions." Transportation Research Record: Journal of the Transportation Research Board 2673, no. 11 (2019): 493–504. http://dx.doi.org/10.1177/0361198119851451.

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In the 2016 Highway Capacity Manual (HCM-6), the impact of trucks on freeway operations is measured by passenger car equivalents (PCEs). PCEs are estimated by the equal capacity methodology. The HCM-6 PCE values are based on the assumptions that passenger cars and trucks travel at the same free-flow speed, that they travel on freeways with three lanes per direction, and that they travel in traffic with no more than 25% trucks. On Interstate 80 in western Nebraska, it is observed that the interaction of high truck percentages and large speed differences between passenger cars and trucks may res

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Zhou, Jianan, Laurence Rilett, Elizabeth Jones, and Yifeng Chen. "Estimating Passenger Car Equivalents on Level Freeway Segments Experiencing High Truck Percentages and Differential Average Speeds." Transportation Research Record: Journal of the Transportation Research Board 2672, no. 15 (2018): 44–54. http://dx.doi.org/10.1177/0361198118798237.

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In the Highway Capacity Manual (HCM), the passenger car equivalent (PCE) of a truck is used to account for the impacts of trucks on traffic flow. The 2010 HCM PCE values were estimated by the equal-density method using a FRESIM simulation. It was determined that the truck PCE for level freeway segments was 1.5 for all conditions. In the 2016 HCM, the PCE values were based on VISSIM simulation output at 1 min intervals along a three-lane, 13 mile (8 mile level and 5 mile graded) section of a roadway. It was determined that the truck PCE for level freeway segments was 2.0. It is hypothesized in

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Sugiarto, Sugiarto, Lulusi, and Sofyan M. Saleh. "An assessment of The Capacity Drops at The Bottleneck Segments: A review on the existing methodologies." Aceh International Journal of Science and Technology 4, no. 2 (2015). http://dx.doi.org/10.13170/aijst.4.2.2544.

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<span lang="EN-US">The term of capacity is very useful to quantify the ability of transport facilities in terms of carrying traffic. The capacity of the road is an essential ingredient in the planning, design, and operation of roadways. It is desirable for traffic analyst to be able to predict the time and places where congestion will occur and the volumes to be expected. Most of urbanized areas have been experiencing of traffic congestion problems particularly at urban arterial systems. High traffic demand and limited supply of roadways are always the main factors produced traffic conge

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Farooq, Danish, and Tayyab Akram. "Traffic Flow Analysis and Solutions to Ease Traffic Flow at Unsignalized Taxila Intersection." Periodica Polytechnica Transportation Engineering, January 10, 2018. http://dx.doi.org/10.3311/pptr.10415.

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Transportation system of a city affects all aspects of its citizen’s economic and personal activities. At a general level, the traffic problem considered as a situation of mismatch between supply (i.e., roads and their capacity) and demands (i.e., travel needs). The city administrators have tried to balance it by creating infrastructures (e.g., new roads, expanding capacity, under pass) or policy changes (e.g., banning heavy traffic movement during peak or day hours). Major problems that motorists are facing on highways intersection are congestion, accidents, and costs. Too many automobiles, t

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Biswas, Subhadip, and Ashutosh Pandey. "Development of ‘Speed Ratio’ Based Level of Service Criteria on Undivided Urban Streets in Mixed Traffic Context." Canadian Journal of Civil Engineering, October 5, 2020. http://dx.doi.org/10.1139/cjce-2020-0104.

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Developing countries are facing challenges in sustaining urban traffic congestion due to rapid urbanization. In order to manage urban traffic, a traffic engineer first need to assess the current operational condition on urban roads. ‘Level of Service (LOS)’ is used to define the operational traffic condition within a traffic stream in terms of service quality that a facility is providing to its user. This paper proposes a novel approach to estimate ‘Speed Ratio’ by considering individual Free-Flow Speed (FFS) of different vehicle categories. This study also provides a comparison between FFS es

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"Design of Traffic Volume Forecasting based on Genetic Algorithm." International Journal of Recent Technology and Engineering 8, no. 2 (2019): 4264–68. http://dx.doi.org/10.35940/ijrte.b2512.078219.

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The traffic flow forecasting is very important aspect of traffic predication and congestion. It alleviates the increasing congestion problems that cause drivers to shorten the travelling duration required and prevent financial loss. Increasing congestion is one of the severe problems in big city areas. The aspect of traffic prediction is that it may give drivers to plan their traveling time and traveling path, based on the predictive data information they have. The aim is to design locally weighted regression model by proposing a method, which is a combination of Genetic algorithm and locally

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Prayitno, Eko, and Veronika Veronika. "KAJIAN KINERJA PERSIMPANGAN TIDAK BERSINYAL (STUDI KASUS : PERSIMPANGAN TIGA GADUT, JALAN RAYA INDARUNG – BANDAR BUAT, KOTA PADANG)." Rang Teknik Journal 2, no. 2 (2019). http://dx.doi.org/10.31869/rtj.v2i2.1183.

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The highway is one of the infrastructure for the smooth traffic. One part of the road that are considered necessary to be analyzed and evaluated is an intersection. Three Gadut intersection is non signalized intersection. The traffic flow is quite dense, and lack of discipline of road user factors competing space to pass the crossing, resulting in congestion is very influential on traffic conditions at peak hours in the morning, afternoon and evening. Prior to conducting the survey, the first to do is survey the condition of the intersection that includes geometric characteristics and traffic

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