Truck rollover accidents on urban freeways occur more frequently at highway interchanges, particularly on curved exit ramps, than at any other location. A truck may rollover if the lateral acceleration imposed upon it as it travels around a curve of a certain radius and superelevation is greater than allowable, given its loading condition. This report evaluates a Truck-Activated Rollover Warning System (TARWS). The TARWS uses truck classification technology to theoretically detect and warn truck drivers when their truck speed exceeds the safe operating speed. A specific site was chosen, in California because of its high frequency of rollover type accidents. The TARWS was installed and a before/after analysis was conducted to determine the effectiveness of the system. This report provides information on the design, its costs and its cost-effectiveness.
Evaluation of a Truck-Activated Rollover Warning System
1999
78 pages
Report
No indication
English
Road Transportation , Transportation Safety , Transportation , Transportation & Traffic Planning , Rollover accidents , Truck overturn accidents , Automatic warning systems , Trucks , Highway safety , Ramps , Design , Accident prevention , Traffic control devices , California , Highways , Warning systems , Interchanges , Detection
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