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原文传递 Evaluation of a Truck-Activated Rollover Warning System

题名：	Evaluation of a Truck-Activated Rollover Warning System
作者：	Raminder S. Bola
关键词：	Truck; rollover; detection; warning; accident prevention; exit ramp; traffic control devices.
摘要：	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 super elevation 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.
报告类型：	科技报告