Estimation method of time-to-line crossing for lane departure warning system

被引：0
作者：
Xu, Lun-Hui [1 ]
Luo, Qiang [1 ]
Xia, Xin-Hai [1 ,2 ]
Hu, San-Gen [1 ]
机构：
[1] School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, Guangdong
[2] Department of Port and Shipping Management, Guangzhou Marine Institute, Guangzhou 510725, Guangdong
来源：
Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) | 2014年 / 42卷 / 03期
关键词：
Driving assistant; Lane departure warning; Relative yaw angle; Time-to-line crossing; Traffic safety;
D O I：
10.3969/j.issn.1000-565X.2014.03.010
中图分类号：
学科分类号：
摘要：
Time-to-line crossing (TLC) is defined as the remaining time that a vehicle travels from the current position to the lane boundary. It has been used as a trigger warning criterion for lane departure warning system, so that its calculation accuracy plays a key role. In this paper, the trajectories of vehicles driven on straight and curved road sections are investigated on the basis of vehicle kinematics and trigonometric function, and the estimation models of the TLC respectively in straight and curved vehicle paths are then presented. Finally, the effects of vehicle lateral distance, relative yaw angle and road curve radius on TLC are analyzed in a simulative way. The results show that (1) in straight paths, TLC is inversely proportional to the relative yaw angle but is proportional to the transverse distance; (2) in curved paths, TLC is inversely proportional to both the relative yaw angle and the path curve radius but is proportional to the transverse distance; and (3) the above-mentioned relationships are opposite to those when the vehicle runs across a lane border in an opposite direction. This research effectively reduces the false alarm rate for lane departure warning systems using TLC as the decision criterion.
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页码：59 / 65+71
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