This article collected relevant data on two high-grade highways in Tibet. Through the statistical analysis of the speed limit value, running speed and traffic accident data, the impact of the increase of the highway speed limit value on the running speed and traffic safety was studied. The regression method was used to analyze the functional relationship between the speed limit increase value and the running speed increase value and the number of traffic accidents, which provides a reference for the speed limit value setting of high-grade highways in high altitude areas. The results show that using the design speed as the speed limit cannot meet the driving expectations of most drivers, and to a certain extent reduces the capacity of high-grade highways. After the speed limit was increased, the original accident-prone road was still the key area of accidents. If no measures are taken, the number of traffic accidents may increase. In engineering practice, the determination of the speed limit value should not only consider the actual running speed of the vehicle, but also analyze the traffic accidents. The increase of the speed limit value on the accident-prone sections should be fully demonstrated and effective engineering measures should be taken.
The Influence of Speed Limit Value of High-Grade Highway in High Altitude Area on Running Speed and Traffic Safety
Lect. Notes Electrical Eng.
International Conference on Green Intelligent Transportation System and Safety ; 2021 November 19, 2021 - November 21, 2021
2022-10-28
8 pages
Article/Chapter (Book)
Electronic Resource
English