CRASH PREVENTION BOUNDARIES FOR ROAD DEPARTURE
The independent evaluation of a roadway departure crash warning system will include assessing the safety benefits and driver acceptance of the system, each of which is influenced by the timing of the warning algorithm. As such, a means to assess this timing is necessary. The crash prevention boundary (CPB) facilitates this. This paper develops analytic CPB relations for two common roadway departure scenarios: lane drift on a straight road and failure to negotiate a curve. The relations are expressed as the required lateral acceleration versus "steering time" and "time to road departure," and include only the essential kinematic variables. The simplicity of the expressions allows an analyst to gain insight into the interaction of the various kinematic variables and to readily apply the expressions to assess both the timing of the warning algorithms and driver responses to the alerts.
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Supplemental Notes:
- Full Conference Proceedings available on CD-ROM.
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Corporate Authors:
1100 17th Street, NW, 12th Floor
Washington, DC United States 20036 -
Authors:
- Wilson, B H
- Burgett, A
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Conference:
- 9th World Congress on Intelligent Transport Systems
- Location: Chicago, Illinois
- Date: 2002-10-14 to 2002-10-17
- Publication Date: 2002
Language
- English
Media Info
- Pagination: 12p
Subject/Index Terms
- TRT Terms: Crash sensors; Intelligent vehicles; Kinematics; Prevention; Roads; Safety; Warning devices
- Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; Safety and Human Factors; Security and Emergencies; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 00940742
- Record Type: Publication
- Files: TRIS
- Created Date: Apr 5 2003 12:00AM