The TravTek System Architecture Evaluation documents in detail the TravTek system, including the Traffic Information Network (TIN), TravTek Information Services Center (TISC), Traffic Management Center (TMC), and the TravTek vehicle. The TravTek system achieved a high state of automation. Link travel time data were received automatically from the probe vehicles, freeway management system, and arterial control management system. These data were fused and distributed to the vehicles, all without operator intervention. The process for estimating link travel times worked well on the basis of information available. TravTek needed more high quality traffic information to provide vehicle routing that had the benefit of accurate, up to minute traffic information. Probe vehicles provided reliable travel times, but reported significant travel time variations on arterial links due to stop time at intersections. Incident information available to TravTek was sparse and usually not timely. Historical link travel time, map, and local information data base accuracy was good.
TravTek System Architecture Evaluation
1995
252 pages
Report
No indication
English
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