Evaluation of Traffic Information and Prediction System (TIPS) as work zone traffic control.
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2004-03-01
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Abstract:As part of a pavement rehabilitation project on I-64, the Traffic Information and Prediction System (TIPS) was installed as a a means of providing real-time data for motorists in advance and through the work zone. This system collects real-time data using roadside non-contact (microwave) sensors, processes the data in a personal computer, calculates travel time between different points on the roadway, and displays the travel time information on several portable changeable message signs positioned at pre-determined locations along the roadway. The system displays information in the form of travel time and distance through the work zone. The objective of this report was to document the performance of TIPS as a method to provide accurate and current information to drivers as they travel through a work zone.
The primary components of the evaluation included the following: 1) the performance and reliability of TIPS, 2) the accuracy of travel time estimates, 3) diversion of traffic from I-64 to an adjacent route, 4) crash data during construction and 5) opinions of drivers who had just traveled through the work zone.
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