01625581

Component

Traffic safety on rural highways has been a crucial worldwide problem. Two-lane rural highways constitute a significant proportion of the highway network in China. According to the investigation results on typical rural highways in Tibet, speeding and illegal occupation of the opposite lane are primary reasons for traffic accidents. Current methods for reducing the speeding are not effective enough and techniques for decreasing the occupation of the opposite lane mostly belong to passive measures. Thus in this paper, the drivers’ visual lane model was established based on the Catmull-Rom spline, to quantify drivers’ visual perception on rural highways. Real vehicle experiment was conducted on G318 and G109 highways in Tibet. Then a calculation model of drivers’ perceptual acceleration is gained by shape parameters of the “middle scene”. The effect between drivers’ perceptual and actual acceleration is asynchronous, and the time interval differs at different speeds. Results showed that a large difference between drivers’ perceptual and actual acceleration led to speeding. With a logistic regression model, the study found that insufficient visual spare road width could result in illegal occupation of the opposite lane, when drivers tried to drive at a comparatively high speed. Relevant active safety technologies were provided from the generating mechanism of traffic accidents, which could make a contribution to the improvement of traffic safety on rural highways.

This paper was sponsored by TRB committee AND10 Standing Committee on Vehicle User Characteristics.

01618707

17-02809

English

0000-0003-3101-3907

15p

2017

Transportation Research Board 96th Annual Meeting

Digital/other

Figures; Photos; References (28) ; Tables

Drivers; Highway safety; Rural highways; Speeding; Two lane highways

Tibet (China)

Highways; Safety and Human Factors

Transportation Research Board Annual Meeting 2017 Paper #17-02809

TRIS, TRB, ATRI

Dec 8 2016 11:03AM