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原文传递 TRAVTEK SYSTEM ARCHITECTURE EVALUATION. FINAL REPORT.

题名：	TRAVTEK SYSTEM ARCHITECTURE EVALUATION. FINAL REPORT.
作者：	Blumentritt-C%Balke-K%Seymour-E%Sanchez-R
关键词：	ADVANCED-TRAVELER-INFORMATION-SYSTEMS%INTELLIGENT-VEHICLE-HIGHWAY-SYSTEMS%TRAFFIC-INFORMATION-SYSTEMS%INFORMATION-CENTERS%TRAFFIC-MANAGEMENT-CENTERS%IN-VEHICLE-ROUTE-GUIDANCE%RELIABILITY-
摘要：	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. A human factors study regarding the TMC operation and environment, found operator improvement was needed. The TravTek system was very reliable, largely due to a distributed architecture. Problems with the TravTek system were largely implementation related, as opposed to architecture related. Lessons learned during TravTek are enumerated, and conclusions are stated which sustain the overall success of TravTek.
总页数：	1995/07. 9111-9403 pp250 (141 Fig., 39 Tab., 25 Ref., 4 App.)
报告类型：	科技报告