摘要: |
The TransGuide project--subtitle "Technology in Motion"--was initiated by the Texas Department of Transportation in response to increasing traffic problems in and around San Antonio. TransGuide is an intelligent transportation system used to detect and respond to incidents, cutting response time from 20 to 2 minutes. Rapid response aids in traffic flow and produces an annual delay savings of $513 million, with additional savings in improved fuel efficiency. This article explains the innovations in procurement, process, and system design that led to the TransGuide project. The 39.4-km project features pairs of inductive-loop-type vehicle detectors in each lane at 0.8-km intervals, video cameras every 1.6 km, and a fiber-optic communications network. The TransGuide Operations Control Center has become a popular site visit for federal, state, and local transportation officials interested in seeing state of the art in action. |