Log in

Relevant bibliographies by topics / Longitudinal slope of the road / Journal articles

To see the other types of publications on this topic, follow the link: Longitudinal slope of the road.

Journal articles on the topic 'Longitudinal slope of the road'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Longitudinal slope of the road.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Liu, Gang. "Estimation of Vehicle Mass and Road Slope for Commercial Vehicles Utilizing an Interacting Multiple-Model Filter Method Under Complex Road Conditions." World Electric Vehicle Journal 16, no. 3 (2025): 172. https://doi.org/10.3390/wevj16030172.

Full text

Abstract:

Precise and real-time estimation of vehicle mass and road slope plays a pivotal role in attaining accurate vehicle control. Currently, road slope estimation predominantly emphasizes longitudinal slopes, with limited research on intricate slopes that include both longitudinal roads and continuous turning up-and-down slopes. To address the limitations in existing road slope estimation research, this paper puts forward a novel joint-estimation approach for vehicle mass and road slope. Vehicle mass is initially estimated via M-estimation and recursive least squares with a forgetting factor (FFRLS)

APA, Harvard, Vancouver, ISO, and other styles

2

Xu, Jinliang, Yaping Dong, and Menghua Yan. "A Model for Estimating Passenger-Car Carbon Emissions that Accounts for Uphill, Downhill and Flat Roads." Sustainability 12, no. 5 (2020): 2028. http://dx.doi.org/10.3390/su12052028.

Full text

Abstract:

The geometric longitudinal slope line of a given road significantly effects the carbon emissions of vehicles traversing it. This study was conducted to explore the carbon emission rules of passenger cars on various highway slopes. The law of conservation of mechanical energy, the first law of thermodynamics and the vehicle longitudinal dynamics theory were utilized to determine the influence of slope design indicators on fuel consumption. The energy conversion, fuel consumption, and carbon emission models of passenger cars on a flat straight road, uphill road, and downhill road sections were d

APA, Harvard, Vancouver, ISO, and other styles

3

Xu, Ning, Zhiyu Shao, Fei Wang, and Huafeng Gong. "Experimental Study Unraveling Flow Allocation Patterns at Crossroad Intersections During Urban Flooding." Water 16, no. 22 (2024): 3314. http://dx.doi.org/10.3390/w16223314.

Full text

Abstract:

Urban roads can effectively handle peak flows during extreme storms by serving as surface flood passages, provided the flow remains within safety thresholds for vehicles and pedestrians. However, studies on flow allocation at crossroad intersections are limited. Previous research has overlooked important factors: road transverse slope and turning radius. This study built a “two in, two out” laboratory crossroad intersection to examine flow allocation patterns. Experiments explored the effects of road longitudinal slope, boundary conditions, and the combined influence of turning radius and side

APA, Harvard, Vancouver, ISO, and other styles

4

Guo, Jiawei, Chao He, Jiaqiang Li, and Heng Wei. "Slope Estimation Method of Electric Vehicles Based on Improved Sage–Husa Adaptive Kalman Filter." Energies 15, no. 11 (2022): 4126. http://dx.doi.org/10.3390/en15114126.

Full text

Abstract:

In order to deal with many influence factors of electric vehicles in driving under complex conditions, this paper establishes the system state equation based on the longitudinal dynamics equation of vehicle. Combined with the improved Sage–Husa adaptive Kalman filter algorithm, the road slope estimation model is established. After the driving speed and rough slope observation are input into the slope estimation model, the accurate road slope estimation at the current time can be obtained. The road slope estimation method is compared with the original Sage–Husa adaptive Kalman filter road slope

APA, Harvard, Vancouver, ISO, and other styles

5

MATSUI, Toshiki, and Naoki SUGANUMA. "Road Region Extraction with Longitudinal Slope." TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 77, no. 782 (2011): 3737–49. http://dx.doi.org/10.1299/kikaic.77.3737.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Li, Yan Chun, and Yuan Yuan Xin. "The Dynamic Response of Large Longitudinal Slope of Asphalt Road Pavement under Heavy Impulsive Load." Advanced Materials Research 1065-1069 (December 2014): 806–13. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.806.

Full text

Abstract:

In order to conduct a further investigation of the causes of damages in large longitudinal slope of asphalt road pavement under actual heavy load, a three-dimensional finite element model was established by ANSYS finite element software. Through applying impulsive load in this model, the variation of the strains of large longitudinal slope of asphalt road pavement under different conditions was obtained and the influence of gradient on the dynamic response of large longitudinal slope of asphalt road pavement was analyzed. The results show that the strains of large longitudinal slope of asphalt

APA, Harvard, Vancouver, ISO, and other styles

7

Lin, Fen, and Chao Huang. "Slip-Slope Estimation of Mutative Road Friction Coefficient Based on Unscented Particle Filter." Applied Mechanics and Materials 249-250 (December 2012): 337–42. http://dx.doi.org/10.4028/www.scientific.net/amm.249-250.337.

Full text

Abstract:

The accurate information of road friction coefficient allows the control algorithm in vehicle activity system to adapt to external driving conditions. This paper developed a slip-slope friction coefficient estimation method based on Unscented Particle Filter. A 7-DOF non-linear vehicle dynamic model was established. The normal force of tire was approximately calculated from the vehicle dynamic model; the slip and longitudinal force of tire were estimated through a combination of tire mechanical model and UPF(Unscented Particle Filter) method. Finally slip-slopes of different adhesion level roa

APA, Harvard, Vancouver, ISO, and other styles

8

Widiyanto, Wahyu, Litan Dey, Sanidhya Nika Purnomo, Purwanto Bekti Santoso, and Srigunawan Sugiharto. "Experimental study on scour at unpaved road shoulder." MATEC Web of Conferences 402 (2024): 04003. http://dx.doi.org/10.1051/matecconf/202440204003.

Full text

Abstract:

Scour is often found along the shoulder of the road, especially the shoulder without pavement in suburban and rural areas. This can reduce the function of the road shoulder and increase the risk of traffic accidents. The mechanism and form of scour have not been widely discussed and need to be studied to improve road safety aspects. This study aims to investigate scour occurrence along the unpaved road shoulders. An experiment was conducted in the laboratory by creating a physical model to simulate the scouring process at unpaved road shoulder. The laboratory test used varying rainfall intensi

APA, Harvard, Vancouver, ISO, and other styles

9

Khakimov, Shaukat, Erkin Fayzullaev, Azimjon Rakhmonov, and Rustam Samatov. "Variation of reaction forces on the axles of the road train depending on road longitudinal slope." E3S Web of Conferences 264 (2021): 05030. http://dx.doi.org/10.1051/e3sconf/202126405030.

Full text

Abstract:

The article discusses the influence of the road longitudinal slope on variation in reaction forces on the wheels of the road train. The description of the longitudinal slope of the road and methods of its determination are given. The design diagram of the forces and moments acting on the road train during its movement uphill and downhill is presented. Equations for calculating the change in the load on the three axles of the road train, depending on the longitudinal slope of the road and the mode of movement, are presented. Based on the calculation results, graphs were constructed to illustrat

APA, Harvard, Vancouver, ISO, and other styles

10

Guo, Luole, Hongbing Xu, Jianxiao Zou, Hongyu Jie, and Gang Zheng. "A state observation and torque compensation–based acceleration slip regulation control approach for a four-wheel independent drive electric vehicle under slope driving." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 12 (2020): 2728–43. http://dx.doi.org/10.1177/0954407020917013.

Full text

Abstract:

Wheel slipping of four-wheel independent drive electric vehicle on slope will reduce vehicle controllability and driving stability, thereby reducing vehicle safety. In order to solve the problem of wheel slipping and optimize the speed control performance of four-wheel independent drive electric vehicle on slope, an acceleration slip regulation control strategy of slope drive is proposed in this paper. First, we design a road identification algorithm to identify the current road conditions of the four-wheel independent drive electric vehicle, and calculate the optimal slip ratio of the current

APA, Harvard, Vancouver, ISO, and other styles

11

Lepoglavec, Kruno, Marijan Šušnjar, Zdravko Pandur, Marin Bačić, Hrvoje Kopseak, and Hrvoje Nevečerel. "Correct Calculation of the Existing Longitudinal Profile of a Forest/Skid Road Using GNSS and a UAV Device." Forests 14, no. 4 (2023): 751. http://dx.doi.org/10.3390/f14040751.

Full text

Abstract:

The increasing importance of utilizing new technologies, such as GNSS (Global navigation satellite system) devices, total stations, drones, scanners, etc., in forestry has become evident with the development of these tools. Combined with precise GNSS devices, UAVs represent an efficient tool that facilitates field measurements and reduces time spent in the field while also providing highly accurate data. To accurately determine the application of spatial data for calculating the longitudinal slope of forest/logging roads in a research project, measurements based on UAVs were conducted and comp

APA, Harvard, Vancouver, ISO, and other styles

12

He, Jiao Long, Shu Guang Chen, and Xin Sheng Zhang. "Research on Technology of Highway Curve and Slope Road Segment Alignment Safety Design." Applied Mechanics and Materials 204-208 (October 2012): 1665–68. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.1665.

Full text

Abstract:

In the paper, Combination curved with slope road segment on the driving experiment , The paper is analyzed the curve and slope road segment on Gradient, Horizontal Curve Radius, Speed and heart rate these variables of the inherent relation and law. The model of the relationship of the longitudinal slope and horizontal curve radius and heart rate is set up. By employing regression analysis, Conduct quantitative analysis, calculation and can be determined by the minimum horizontal curve radius value of vertical slope corresponding to at different vehicle-speeds on curved with longitudinal slope,

APA, Harvard, Vancouver, ISO, and other styles

13

Fu, Jun, Yu Qin, and Qing Jun Ding. "Research on Influence of Longitudinal Gradient to Rigid Base Composite Road of Cross River (Sea) Tunnel under Large Longitudinal Slope." Advanced Materials Research 189-193 (February 2011): 1621–24. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.1621.

Full text

Abstract:

The influences of longitudinal gradient on the large longitudinal slope rigid base composite road of cross river(sea) tunnel are concerned recently. Then the relationships between sheering stresses versus slope angle, load, pavement depth, interlayer touch condition and modulus are discussed separately by a three dimensional FEM model. Calculation and analysis showed: gradient had great influence on the surface tangent load and little influence on design deflection, the base and surface.The maximum tension and sheer on surface were increased with the gradient. On general, the gradient and surf

APA, Harvard, Vancouver, ISO, and other styles

14

Yusupov, Umidbek, and Akmal Mukhitdinov. "Evaluation of the influence of the longitudinal slope of carriage roads on the tire life." E3S Web of Conferences 401 (2023): 03025. http://dx.doi.org/10.1051/e3sconf/202340103025.

Full text

Abstract:

This article presents an analysis of the results of an experiment conducted in the Muruntau quarry. All routes are divided into 5 groups depending on the average slope of the road. For the first group, routes with an average road slope from −1 to +1% were chosen; for the second group, with an average road slope from 1 to 3%; for the third, from 3 to 5%; for the fourth, from 5 to 7%; fifth more than 7%. The experiments were carried out on Komatsu HD785-7 dump trucks with a carrying capacity of 91 tons. According to the results of the experiment, it was found that the life of dump truck tires op

APA, Harvard, Vancouver, ISO, and other styles

15

Xi, Xiuhao, Jun Xiao, Qiang Zhang, and Yanchao Wang. "Pavement State Recognition Method Considering Slope." Journal of Physics: Conference Series 2113, no. 1 (2021): 012080. http://dx.doi.org/10.1088/1742-6596/2113/1/012080.

Full text

Abstract:

Abstract For the problem of road surface condition recognition, this paper proposes a real-time tracking method to estimate road surface slope and adhesion coefficient. Based on the fusion of dynamics and kinematics, the current road slope of the vehicle which correct vertical load is estimated. The effect of the noise from dynamic and kinematic methods on the estimation results is removed by designing a filter. The normalized longitudinal force and lateral force are calculated by Dugoff tire model, and the Jacobian matrix of the vector function of the process equation is obtained by combining

APA, Harvard, Vancouver, ISO, and other styles

16

Bakibillah, A. S. M., Md Abdus Samad Kamal, Jun-ichi Imura, Masakazu Mukai, and Kou Yamada. "Eco-Driving on Hilly Roads in a Mixed Traffic Environment: A Model Predictive Control Approach." Actuators 13, no. 4 (2024): 144. http://dx.doi.org/10.3390/act13040144.

Full text

Abstract:

Human driving behavior significantly affects vehicle fuel economy and emissions on hilly roads. This paper presents an ecological (eco) driving scheme (EDS) on hilly roads using nonlinear model predictive control (NMPC) in a mixed traffic environment. A nonlinear optimization problem with a relevant prediction horizon and a cost function is formulated using variables impacting the fuel economy of vehicles. The EDS minimizes vehicle fuel usage and emissions by generating the optimum velocity trajectory considering the longitudinal motion dynamics, the preceding vehicle’s state, and slope inform

APA, Harvard, Vancouver, ISO, and other styles

17

Leontiev, D. N., A. V. Ihnatenko, O. V. Synkovska, et al. "Fuel Consumption of Wheeled Vehicle and Transportation Costs during Highway Construction/Reconstruction." Science & Technique 20, no. 6 (2021): 522–27. http://dx.doi.org/10.21122/2227-1031-2021-20-6-522-527.

Full text

Abstract:

A method is proposed for determining the fuel consumption of a wheeled vehicle depending on its speed, road surface flatness and road slope in the longitudinal direction. The purpose of the research is to derive mathematical relationships for calculating the fuel consumption of vehicles, which is one of the transport cost factors during the construction/reconstruction or overhaul of a highway. The proposed polynomial dependencies for calculating fuel in addition to vehicle speed, road surface flatness and its longitudinal slope take into account the mass-dimensional parameters of vehicles invo

APA, Harvard, Vancouver, ISO, and other styles

18

Lin, Fen. "A New Method for Estimating Road Friction Coefficient." Advanced Materials Research 139-141 (October 2010): 2622–25. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.2622.

Full text

Abstract:

Road friction coefficient is a critical component in traffic safety. The estimation of tire–road friction coefficient at tires allows the control algorithm in vehicle activity system to adapt to external driving conditions. This paper develops a new tire–road friction coefficient estimation algorithm based on tire longitudinal force estimation and tire slip estimation. Vehicle tire longitudinal forces are estimated by sliding mode observer combined with Kalman filter. Based on the tire forces estimation, road friction coefficient is estimated by recursive least squares algorithm (RLS). The tes

APA, Harvard, Vancouver, ISO, and other styles

19

Fayzullayev, Erkin, Shaukat Khakimov, Azimjon Rakhmonov, Sayyora Rajapova, and Zokhidjon Rakhimbaev. "Traffic intensity on roads with big longitudinal slope in mountain conditions." E3S Web of Conferences 401 (2023): 01073. http://dx.doi.org/10.1051/e3sconf/202340101073.

Full text

Abstract:

The instantaneous, average, and critical speeds of vehicles passing through the Kamchik pass were determined in this article. The law of critical speeds of safe movement of the traffic flow has been developed. The research results on determining the speed of movement of vehicles of different categories in mountain conditions are presented. To ensure safety, depending on the speed of the vehicles and the condition of the road surface on the dangerous areas of the mountain road, recommendations are given on the speed limits and road signs to be installed.

APA, Harvard, Vancouver, ISO, and other styles

20

Zou, Qingru, Yue Xia, Xinchen Ran, Xueli Guo, and Jiaxiao Feng. "Classification of mountain-based rail transit stations and analysis of passenger flow influencing mechanisms." PLOS One 20, no. 5 (2025): e0323937. https://doi.org/10.1371/journal.pone.0323937.

Full text

Abstract:

Mountainous urban rail transit stations exhibit distinct characteristics. To investigate how these features affect passenger flow variations at rail stations, we analyze geographic-environmental data surrounding the stations and integrate road network topology, automatic fare collection data, and point-of-interest (POI) data. We propose a method to classify rail transit stations by considering the mountainous features and establish a multiscale geographically weighted regression (MGWR) model to assess the classification results. This study focuses on 189 rail stations in Chongqing, identifying

APA, Harvard, Vancouver, ISO, and other styles

21

DUYUNOV, Petr Kuz'mich. "DESIGN OF ROADS ON APPROACHES TO A MOUNTAIN PASS." Urban construction and architecture 6, no. 1 (2016): 41–48. http://dx.doi.org/10.17673/vestnik.2016.01.7.

Full text

Abstract:

The paper dwells upon various designs of roads on approaches to a mountain pass with the use of loops and serpentines. When designing serpentines it has been offered to calculate the magnitude of the transition curve on the base curve taking into consideration the optimum safety speed, and on the reversed curve - the speed provided by the basic curve rather than its radius. This allows to adjust a road layout to the relief form at the most, causing minimum possible damage to the environment. It has been recommended to lay a road on the approaches to a mountain pass focusing not on the limiting

APA, Harvard, Vancouver, ISO, and other styles

22

KORTIEV, Levan, Alan KORTIEV, Sarmat VANEEV, and Robert KULUMBEGOV. "FUNCTIONING AND DYNAMICS OF LANDSCAPES IN THE DESIGN OF HIGHWAYS IN MOUNTAINOUS CONDITIONS." Sustainable Development of Mountain Territories 12, no. 4 (2020): 565–71. http://dx.doi.org/10.21177/1998-4502-2020-12-4-565-571.

Full text

Abstract:

Introduction. Roads, as linear engineering structures in mountainous conditions for the sake of traffic safety, should provide a smooth interface and their harmonious combination with the surrounding landscape with the use of longitudinal slopes and radii on curves that reduce accidents and injuries. Anthropogenic intervention on the mountain natural landscape, for the purpose of road construction, is not always safe, because weak soils come into dynamics and the functioning of the road is complicated. For this , it is necessary to conduct a spatial analysis and an integrated approach to the i

APA, Harvard, Vancouver, ISO, and other styles

23

Kudrevatykh, Andrey, Andrey Furman, and Andrey Ashcheulov. "Road longitudinal slope influence on the efficiency of excavator-automobile complexes usage." E3S Web of Conferences 315 (2021): 01022. http://dx.doi.org/10.1051/e3sconf/202131501022.

Full text

Abstract:

At present, the country's coal industry pays special attention to the open-pit mining, because of its higher efficiency and profitability. According to various surveys, currently the share of open-pit mining is 50 - 65%, and it will increase to 80 - 85% in the future. The development of an open-pit mining is accompanied by production scale increase, open pits depth increases and complexity of mining conditions of main technological equipment operation increases. With the increase of open pits depth, technological road transport becomes the most problematic issue in mining, since open-pit depth

APA, Harvard, Vancouver, ISO, and other styles

24

Jo, Junbeom, Changjae Kwak, Jungsoo Kim, and Sooyoul Kim. "Deriving Optimal Analysis Method for Road Surface Runoff with Change in Basin Geometry and Grate Inlet Installation." Water 14, no. 19 (2022): 3132. http://dx.doi.org/10.3390/w14193132.

Full text

Abstract:

Road surface-runoffs have been analyzed using various approaches, but inaccurate analysis methods lead to overestimation of the drainage capacity, causing unexpected flood damage in low-lying urban areas. Previous studies have highlighted the importance of considering various parameters for accurate road surface-runoff analysis. This study involves road surface-runoff analysis using an enhanced approach considering simplified and modified drainage basin geometries, road surface and gutter flow travel times, and inlet interception efficiency as key parameters under various road conditions. The

APA, Harvard, Vancouver, ISO, and other styles

25

Posada-Henao, John Jairo, Iván Sarmiento-Ordosgoitia, and Alexánder A. Correa-Espinal. "Effects of Road Slope and Vehicle Weight on Truck Fuel Consumption." Sustainability 15, no. 1 (2022): 724. http://dx.doi.org/10.3390/su15010724.

Full text

Abstract:

In this paper, we developed truck fuel consumption models for the particular assistance of professionals in charge of road project valuation in terms of predicting fuel used by trucks, which is an important topic on vehicle operating costs to be considered in the benefit–cost analysis of road projects. On the other hand, fuel consumption has a direct impact on emissions to the atmosphere, and thus future research can be conducted regarding estimations about emissions by trucks. In this research, we identified the effect of overall vehicle weight on truck fuel consumption in a free-flow regime.

APA, Harvard, Vancouver, ISO, and other styles

26

Hashemi, Mahsa, Ramin Naghdi, Mehrdad Nikooy, and Vahid Hemmati. "Assessment of forest road pavement materials one year after restoration (Case study: Asalem forest in northern Iran)." Journal of Forest Science 65, No. 3 (2019): 113–19. http://dx.doi.org/10.17221/68/2018-jfs.

Full text

Abstract:

The main purpose of this study was evaluating indicators of forest road pavement degradation and their relation with different longitudinal slope classes after one year. Therefore, 30 plots of 100 m<sup>2</sup> (10×10 m) area at a distance of 100 meters from each other were selected by a systematic method in the study forest road in the north of Iran. All effective factors on pavement degradation, like longitudinal and transverse slope, crown canopy on top of plots, azimuth and shape of road bed were measured. Additionally, to evaluate the mechanical characteristics of soil, 4 kg s

APA, Harvard, Vancouver, ISO, and other styles

27

Yusupov, Umidbek, and Xumoyun Shavkatov. "Development of a standard mileage for large-sized tires under moderately severe quarry conditions." BIO Web of Conferences 141 (2024): 04034. https://doi.org/10.1051/bioconf/202414104034.

Full text

Abstract:

The tire life depends on many factors, such as the correct loading of the dump truck, longitudinal and transverse slopes of the road, turning radius, internal tire pressure, uniform distribution of the loaded ore, average operating speed of the dump truck, road surface, its condition and type, driver skill, ambient temperature, etc. It has been studied that one of the ways to increase the mileage of tires can be to reduce the number of sections, if technically possible, with longitudinal slopes of more than 8%. Based on the results of the experiment conducted at Navoi Mining and Metallurgical

APA, Harvard, Vancouver, ISO, and other styles

28

Alex, Coiret, Vandanjon Pierre-Olivier, and Noël Romain. "Enhancement of Vehicle Eco-Driving Applicability through Road Infrastructure Design and Exploitation." Vehicles 5, no. 1 (2023): 367–86. http://dx.doi.org/10.3390/vehicles5010021.

Full text

Abstract:

Energy moderation of the road transportation sector is required to limit climate change and to preserve resources. This work is focused on the moderation of vehicle consumption by optimizing the speed policy along an itinerary while taking into account vehicle dynamics, driver visibility and the road’s longitudinal profile. First, a criterion is proposed in order to detect speed policies that are impeding drivers’ eco-driving ability. Then, an energy evaluation is carried out and an optimization is proposed. A numerical application is performed on a speed limiting point with 20 usage cases and

APA, Harvard, Vancouver, ISO, and other styles

29

Manuel, Calequela J. T., Max M. D. Santos, Giane G. Lenzi, and Angelo M. Tusset. "Longitudinal Modeling of a Road Vehicle: 4-Wheel Traction." International Journal of Robotics and Control Systems 2, no. 2 (2022): 357–69. http://dx.doi.org/10.31763/ijrcs.v2i2.698.

Full text

Abstract:

This paper presents the longitudinal modeling of a 4-wheel traction vehicle represented in a block diagram using Matlab®/Simulink® software. The proposed modeling is suitable to be implemented in automatic parallel, oblique, or perpendicular parking systems considering speed cases between 5 km/h and 30 km/h. For the computational simulations, it was considered that the vehicle starts at rest and goes up a referenced or determined slope in degrees (°), with a sufficient rear reaction force to allow the vehicle to move until the engine produces sufficient torque. For the model of the tire varian

APA, Harvard, Vancouver, ISO, and other styles

30

Khanjari, Maziyar, Ali Abdi Kordani, and Saeed Monajjem. "Simulation and Modelling of Safety of Roadways in Reverse Horizontal Curves (RHCs): With Focus on Lateral Friction Coefficient." Journal of Advanced Transportation 2022 (March 7, 2022): 1–14. http://dx.doi.org/10.1155/2022/1952323.

Full text

Abstract:

Reverse Horizontal Curves (RHCs) are among the most accident-prone road points, with many annual fatalities and injuries. These fatalities can increase dramatically if the RHCs and longitudinal slopes are combined. The importance of increasing the safety of RHCs, especially in mountainous routes, is doubled due to the possibility of combining RHCs with vertical extensions or combining them with so-called steep slopes. This study used vehicle dynamic modeling to evaluate the lateral friction of various vehicles. Including the E-Class Sedan, E-Class SUV, Truck, and Bus, moving on RHCs combined w

APA, Harvard, Vancouver, ISO, and other styles

31

Martinov, Dimitar. "Some Problems in the Three-Dimensional Modeling of the Road in an Open Section for Two-Lane Roads by Using Modern BIM Software Products." Annual of Univercity of architecture, civil engineering and geodesy 57, no. 1 (2024): 277–84. https://doi.org/10.71167/uaceg.2024.570121.

Full text

Abstract:

The paper examines some of the problems faced by road designers, as well as guidelines for overcoming them, when they aim to reach the final product of the design of two-lane open roads, fully automated, i.e. to reach a final version of a three-dimensional model of the road body, mainly using the overall resource of a modern software product, without using actions that will not be uniquely reflected in the model and the other visualization projections of the road. The problems mainly deal with the structural elements and, more precisely, the non-compliance with the normative requirements for t

APA, Harvard, Vancouver, ISO, and other styles

32

Zhou, Yifang, Mingzhang Pan, Wei Guan, Xinxin Cao, Huasheng Chen, and Leyi Yuan. "A Novel Longitudinal Control Method Integrating Driving Style and Slope Prediction for High-Efficiency HD Vehicles." Applied Sciences 13, no. 21 (2023): 11968. http://dx.doi.org/10.3390/app132111968.

Full text

Abstract:

Developing high-precision vehicle longitudinal control technology guided by ecological driving represents a highly promising yet challenging endeavor. It necessitates the fulfillment of the driver’s operational intentions, precise speed control, and reduced fuel consumption. In light of this challenge, this study presents a novel vehicle longitudinal control model that integrates real-time driving style analysis and road slope prediction. First, it utilizes spectral clustering based on Bi-LSTM automatic encoders to identify driver driving styles. Next, it examines the driving environment and p

APA, Harvard, Vancouver, ISO, and other styles

33

Yin, Zhenyu, Qikun Dai, Hongyan Guo, Hong Chen, and Li Chao. "Estimation Road Slope and Longitudinal Velocity for Four-wheel Drive Vehicle." IFAC-PapersOnLine 51, no. 31 (2018): 572–77. http://dx.doi.org/10.1016/j.ifacol.2018.10.139.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Liu, Haocheng, Bin Xu, Hongshan Wang, et al. "Drainage Performance of Long Longitudinal Slope and High Safety Permeable Asphalt Pavement." Buildings 13, no. 12 (2023): 2955. http://dx.doi.org/10.3390/buildings13122955.

Full text

Abstract:

Permeable asphalt pavement refers to an asphalt mixture layer with an air void content of more than 18% and internal water permeability and drainage capabilities that can quickly drain away water on the road surface, improve rainy day travel safety, and improve ride comfort. This paper aims to explore the optimal asphalt mixture design for long longitudinal slope pavement (referred to as the FAM mixture). By using CT scanning technology to analyze the air void content of different rotated and compacted asphalt mixture specimens and extensively testing and evaluating the performance of permeabl

APA, Harvard, Vancouver, ISO, and other styles

35

Тесля, V. Teslya, Абрамов, and D. Abramov. "ERROR ESTIMATE OF ACCELEROMETER MEASURING ACCELERATION OF THE CAR ON THE ROAD WITH LONGITUDINAL SLOPE." Alternative energy sources in the transport-technological complex: problems and prospects of rational use of 2, no. 2 (2015): 515–21. http://dx.doi.org/10.12737/19361.

Full text

Abstract:

The estimation of the magnitude of the error of accelerometer along sensitive axis, parallel to the longitudinal axis of the vehicle, with its accelerated movement on the road with longitudinal slope is done. An amendment to the testimony of the accelerometer, which allows reducing measurement error to acceptable values introduced

APA, Harvard, Vancouver, ISO, and other styles

36

Bajrić, Muhamed, Dragutin Pičman, Dževada Sokolović, and Safet Gurda. "PREVOĐENJE TRAKTORSKIH VLAKA UZDUŽNOG NAGIBA DO 12% U PRILAZNE KAMIONSKE PUTEVE." Radovi Šumarskog fakulteta Univerziteta u Sarajevu 41, no. 1 (2011): 85–100. http://dx.doi.org/10.54652/rsf.2011.v41.i1.142.

Full text

Abstract:

UDK 630*38 The paper presents one of the possible approaches to construction of the forest truck access roads, in this case transformation of the main skid roads with longitudinal slope up to 12%. Such an approach to construction of forest truck roads can generate significant financial savings. It assumes significantly smaller volume of earthworks, in particular in preparation of the ground and the lower road layer, and thus lower financial investment in road construction. Through a detailed comparative analysis of the estimated measures and estimated costs of transition and new construc

APA, Harvard, Vancouver, ISO, and other styles

37

Roşca, Petru, Gheorghe Olaru, and Dorel Badea. "Using Trucksim for a Virtual Longitudinal Slope Test Procedure." Land Forces Academy Review 24, no. 1 (2019): 83–88. http://dx.doi.org/10.2478/raft-2019-0010.

Full text

Abstract:

Abstract This paper presents a methodology to validate a virtual test procedure for vehicle gradeability performance. It is a test dedicated to both the civilian and military off-road vehicles, an 8 x 8 Armoured Personnel Carrier being selected for the purpose of the paper. TruckSim is the software used to implement the vehicle math model and the test procedure. The simulation results are compared with the experimental results for a 60 % gradient. The vehicle speed and the engine speed graphics, the statistical analyze, and the comparison between the simulation test animation and the experimen

APA, Harvard, Vancouver, ISO, and other styles

38

He, Jin, Yiyong Zhang, Baofeng Wang, Shaopeng Li, Xiaoliang Wang, and Zhijie Hu. "A study on the hill climbing performance of trucks based on Trucksim for heavy-duty trucks." Advances in Engineering Technology Research 12, no. 1 (2024): 565. https://doi.org/10.56028/aetr.12.1.565.2024.

Full text

Abstract:

Based on Trucksim simulation software, this paper investigates the hill climbing performance of heavy-duty trucks, focusing on analyzing the factors affecting the equilibrium speed of trucks at different gradients and slope lengths. With the rapid development of China's road freight industry, the number of trucks and freight volume have increased dramatically, resulting in the power performance of heavy-duty trucks when climbing slopes is particularly prominent. Insufficient climbing power not only affects the road capacity, but also may cause traffic accidents. Therefore, this paper investiga

APA, Harvard, Vancouver, ISO, and other styles

39

Yolmeh, Ghaffar, Aidin Parsakhoo, Vahedberdi Sheikh, and Jahangir Mohamadi. "Effect of the standard levels of forest road segments on soil loss." Journal of Forest Science 67, No. 2 (2021): 80–86. http://dx.doi.org/10.17221/73/2020-jfs.

Full text

Abstract:

Roads with the low standard level are often more susceptible to soil loss and production of sediment during rainfall events. The main aims of this research were to investigate the relationships between the standard level of the road and soil loss and determine the most effective road attributes in soil loss. Therefore, 30 road segments were selected in Bahramnia forest district, Golestan Province. These segments were classified into low standard, medium standard and high standard levels based on longitudinal slope, coverage on cut slopes, distance from runoff origin to culvert, traffic volume,

APA, Harvard, Vancouver, ISO, and other styles

40

Aranda, José Ángel, Martí Sánchez-Juny, Marcos Sanz-Ramos, and Carles Beneyto. "Design of Drainage Downspouts Systems over a Road Embankment." Water 15, no. 20 (2023): 3529. http://dx.doi.org/10.3390/w15203529.

Full text

Abstract:

Numerous studies have examined the complex relationship between factors like embankment downspout spacing, height, slope, and rainfall characteristics in the quest to find the best spacing for embankment downspouts. Defining the correct spacing between road drainage elements is of utmost importance in minimizing water flow on roadways. This paper presents a methodology based on numerical methods for the design of road drainage systems using the Iber model. The objective of the work is to propose a tool and criteria for analyzing the hydraulic behavior of runoff on highways, determine the appro

APA, Harvard, Vancouver, ISO, and other styles

41

LIN, Shyh Chyang. "LANDSCAPE AND TRAFFIC FACTORS AFFECTING ANIMAL ROAD MORTALITY." JOURNAL OF ENVIRONMENTAL ENGINEERING AND LANDSCAPE MANAGEMENT 24, no. 1 (2016): 10–20. http://dx.doi.org/10.3846/16486897.2015.1098652.

Full text

Abstract:

Roadkill is a significant indicator in realizing the impacts of roads on adjacent ecosystems. This study undertakes a comprehensive survey of roadkills in Kinmen (Taiwan) and analyzes their causes. Two models, Traffic Flow Model and Geometric Model, combined with animal road-crossing behaviors, are used to derive survival probability. Survey results and model predictions yield similar results for moderate traffic flow and agree in bird and small mammal roadkill frequency prediction. It is found that traffic volume, adjacent landscape and road condition are the major contributing factors relate

APA, Harvard, Vancouver, ISO, and other styles

42

Ding, Minghui, Wenliang Yong, Bo Wang, and Xin Guan. "Research on the real-time identification approach of longitudinal road slope and maximum road friction coefficient." International Journal of Vehicle Design 79, no. 1 (2019): 18. http://dx.doi.org/10.1504/ijvd.2019.10023090.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Yong, Wenliang, Xin Guan, Bo Wang, and Minghui Ding. "Research on the real-time identification approach of longitudinal road slope and maximum road friction coefficient." International Journal of Vehicle Design 79, no. 1 (2019): 18. http://dx.doi.org/10.1504/ijvd.2019.101519.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Vandanjon, Pierre-Olivier, and Emmanuel Vinot. "Slope Optimization (or “Sloop”): Customized Optimization for Road Longitudinal Profile Eco-Design." Energies 13, no. 24 (2020): 6575. http://dx.doi.org/10.3390/en13246575.

Full text

Abstract:

Current transportation systems contributed to one quarter to the Greenhouse Gases (GhG) emissions and the mobility demand increases continuously. The transportation infrastructure design has to be optimized to mitigate these emissions. The methodology “Sloop” (acronym for Slope Optimization) has recently been set up to optimize the longitudinal road profile with respect to a Global Warming Potential (GWP) criterion calculated for both the construction and operational phases while incorporating accurate vehicle models. This paper proposes a customized optimization strategy that significantly im

APA, Harvard, Vancouver, ISO, and other styles

45

Niccolai, A., L. Berzi, F. Barone, and N. Baldanzini. "Analysis of Energy Consumption for electric motorcycles depending on vehicle configuration and driving cycles." IOP Conference Series: Materials Science and Engineering 1306, no. 1 (2024): 012032. http://dx.doi.org/10.1088/1757-899x/1306/1/012032.

Full text

Abstract:

Abstract This article presents an analysis of energy consumption for battery electric motorcycles (BEM) based on vehicle configuration and driving cycles. The study investigates the impact of two architectures: rear-wheel regenerative (RWR), and two-wheel regenerative (2WR) on consumption. For the analysis, the study considered the effect of various parameters on the longitudinal vehicle dynamics such as speed profiles (WMTC, real-world profile), longitudinal road slope (from -5° to 5° with 0.5° step increment), and 5 different brake distributions. The research employs simulation techniques us

APA, Harvard, Vancouver, ISO, and other styles

46

Ling, Hongwei, and Bin Huang. "Research on Torque Distribution of Four-Wheel Independent Drive Off-Road Vehicle Based on PRLS Road Slope Estimation." Mathematical Problems in Engineering 2021 (September 11, 2021): 1–11. http://dx.doi.org/10.1155/2021/5399588.

Full text

Abstract:

In view of the high difficulty in coupling of various electric vehicle parameters, intractable parameter estimation, and unreasonable distribution of vehicle driving torque, the four-wheel hub motor is applied to drive electric vehicles, which can instantly obtain the torque and speed of the hub motor and achieve precise control of the torque of each wheel. According to the vehicle longitudinal dynamics model, a progressive RLS (PRLS) algorithm for real-time estimation of vehicle mass and road gradient is proposed. Meanwhile, by means of taking the longitudinal acceleration of the vehicle and

APA, Harvard, Vancouver, ISO, and other styles

47

Tu, Dengkai, Junmei Li, Yanfeng Li, and Desheng Xu. "Numerical Study on the Influence of the Slope Composition of the Asymmetric V-Shaped Tunnel on Smoke Spread in Tunnel Fire." Fire 7, no. 10 (2024): 363. http://dx.doi.org/10.3390/fire7100363.

Full text

Abstract:

Asymmetrical V-shaped tunnels often appear in tunnels crossing the river or urban underground road tunnels. The smoke flow inside is affected by a lot of factors. A full understanding of the smoke flow in this kind of tunnel is the basis of the smoke control. In this study, the effects of slope composition and fire heat release rate (HRR) on the longitudinal induced airflow velocity, the smoke back-layering length at the small slope side, and the maximum ceiling temperature were studied by the numerical method. The results show that when the fire occurs at the slope change point of the V-shape

APA, Harvard, Vancouver, ISO, and other styles

48

Cvitanić, Dražen, Deana Breški, and Biljana Maljković. "Impact of road alignment on fuel consumption and gas emissions – experimental and analytical research." Advances in Civil and Architectural Engineering 14, no. 26 (2023): 40–53. http://dx.doi.org/10.13167/2023.26.4.

Full text

Abstract:

This research analysed the impact of road alignment on the fuel consumption and gas emissions of a vehicle driven at a free-flow speed by an 85th percentile driver. The field experiment included constant and free-flow speed rides by a personal car equipped with a high-performance (10 Hz) Bluetooth global position device and on-board diagnostics connector, with which the travel path, speed, acceleration, and consumption data were recorded. Regression analyses of the dependence of free-flow speed and fuel consumption on the geometric characteristics of the road (curvature, length, longitudinal s

APA, Harvard, Vancouver, ISO, and other styles

49

Kropáč, Oldřich, and Peter Múčka. "Classification Scheme for Random Longitudinal Road Unevenness Considering Road Waviness and Vehicle Response." Shock and Vibration 16, no. 3 (2009): 273–89. http://dx.doi.org/10.1155/2009/935858.

Full text

Abstract:

A novel approach to the road unevenness classification based on the power spectral density with consideration of vehicle vibration response and broad interval of road waviness (road elevation PSD slope) is presented. This approach enables transformation of two basic parameters of road profile elevation PSD (unevenness index,C, and waviness,w) into a single-number indicatorCwwhen using a correction factorKwaccounting forw. For the road classification proposal two planar vehicle models (passenger car and truck), ten responses (reflecting ride comfort, dynamic load of road and cargo, ride safety)

APA, Harvard, Vancouver, ISO, and other styles

50

Kalech, B., B. Jouini, M. Bouterra, A. El Cafsi, and A. Belghith. "Study of the Smoke Propagation in a Road Tunnel." Journal of Scientific Research 6, no. 1 (2013): 51–68. http://dx.doi.org/10.3329/jsr.v6i1.14696.

Full text

Abstract:

Road tunnels are increasingly built due to heavy traffic in dense urban areas. Knowledge of the spread of smoke is still limited. A numerical study on the smoke flow in a tunnel has been made using the model of small-scale tunnel. Effects of the longitudinal air flow on the flow structure, the temperature distribution and the smoke stratification of the fire in the tunnel have been considered by taking into account the inclination of the tunnel and the transverse positioning of the source. The results show that the spread of smoke is independent of the transverse position of the source in the

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!