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Title:

Threshold Determination of Lane Departure Warning System for Mountainous Freeways

Accession Number:

01337916

Record Type:

Component

Abstract:

Single vehicle run-off-road accidents, especially heavy trucks accidents frequently occur on mountainous freeways in China, which leads to a huge loss of people's lives and properties. Lane departure warning system is designed to alert drivers about these leaving behaviors. The purpose of this study is to get a critical detection of warning lane departure for reminding drivers¡¯ leaving behaviors to avoid vehicles running off roadside. Paper first explores reasons and risks of run-off-road crashes, then introduced a lane departure warning system (LDWS) in the hope of reducing frequency of such crashes substantially. Lateral offset strategy was chosen to warn drivers of their leaving behaviors and thresholds of different level deviations were to be determined. In this research, Badaling freeway was selected as the study roadway section. According to historical safety records, traffic crashes occurred frequently on this freeway heading to Beijing direction, which was located in mountain area. Paper picked out segments between 51.5 km and 55.6 to collect pertinent information of drivers' lane departures by digit video for a week. Lane departures data were collected by digit video from 10:00 am to 16:00 pm for one week. Observed departure values were divided into several groups and aggregated into four categories by COWEB cluster tree algorithm to orient different levels of vehicles leaving behaviors. The system sends out signals to indicate degrees of lane deviation. In the end, relative tests were carried out to guarantee reliability and feasibility of system. Results drawn from this paper lays a solid foundation for further development of lane departure warning system (LDWS) for mountainous freeways in China.

Monograph Accession #:

01329018

Report/Paper Numbers:

11-0967

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Han, Feng Chun
Cao, Jinxuan
Xu, Ting
Sun, Xiaoduan

Pagination:

14p

Publication Date:

2011

Conference:

Transportation Research Board 90th Annual Meeting

Location: Washington DC, United States
Date: 2011-1-23 to 2011-1-27
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (7) ; Photos (2) ; References (9) ; Tables (4)

Identifier Terms:

Badaling Expressway (China)

Uncontrolled Terms:

Lane departures

Geographic Terms:

Beijing (China); China

Subject Areas:

Highways; Safety and Human Factors; I83: Accidents and the Human Factor

Source Data:

Transportation Research Board Annual Meeting 2011 Paper #11-0967

Files:

TRIS, TRB

Created Date:

Feb 17 2011 5:38PM