Research on Truck Traffic Volume Conditions of Auxiliary Lanes on Two-Lane Highways

The larger the proportion of truck traffic volume, the greater the impact on traffic efficiency, and overtaking behavior will also have an impact. Therefore, in order to clarify the truck traffic volume of the freight two-lane highway due to the difficulty of overtaking, an actual vehicle test is ca...

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Veröffentlicht in:Sustainability 2021-12, Vol.13 (23), p.13097
Hauptverfasser: Cheng, Guozhu, Mu, Changru, Xu, Liang, Kang, Xuejian
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creator Cheng, Guozhu
Mu, Changru
Xu, Liang
Kang, Xuejian
description The larger the proportion of truck traffic volume, the greater the impact on traffic efficiency, and overtaking behavior will also have an impact. Therefore, in order to clarify the truck traffic volume of the freight two-lane highway due to the difficulty of overtaking, an actual vehicle test is carried out. This involves selecting the appropriate two-lane test section, recording each moment and speed in the driver’s overtaking behavior, performing multiple regression analysis to examine the relationship between the overtaking conflict time and design speed and traffic volume, determining a reasonable evaluation series of two-lane road overtaking risk and the corresponding overtaking conflict time threshold by the Fisher optimal segmentation method, and giving an overtaking behavior risk evaluation method based on conflict time. Finally, according to the overtaking conflict time model, different truck traffic conditions are obtained. The research results show that overtaking conflict time is negatively correlated with the traffic volume and design speed of the lane. Through the risk assessment of the corresponding overtaking behavior, the three levels of serious conflict, general conflict and non-conflict are determined, and the freight traffic volume corresponding to different conflict levels at different speeds is calculated, which provides a reference for setting auxiliary lanes for the two-lane freight highway.
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subjects Design optimization
Fatalities
Freight traffic
Highways
Multiple regression analysis
Overtaking
Risk assessment
Risk taking
Roads & highways
Segmentation
Sustainability
Traffic accidents & safety
Traffic models
Traffic speed
Traffic volume
Transportation planning
Trucks
title Research on Truck Traffic Volume Conditions of Auxiliary Lanes on Two-Lane Highways
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