This paper discusses the Universal Traffic Management System (UTMS) in Japan, from the viewpoint of traffic control using an automatic control system. It considers: (1) the optimal control of the traffic signal control system; (2) the supply of traffic information by means of low-cost message signs and information supply equipment in vehicles; (3) the development of a more cost-effective traffic data acquisition system, using low-cost vehicle detectors and optical vehicle detectors; and (4) the main part of the system, the Integrated Traffic Control System (ITCS). The functions of the ITCS are: (1) advanced mobile information system; (2) public transport priority system; (3) mobile operation control system; (3) mobile operation control system; (4) environment protection management system; and (5) dynamic route guidance system. UTMS aims at upgraded traffic management, including: (1) maintaining priority for urgent vehicles; (2) ensuring the punctuality of public road transport; and (3) protecting the environment. UTMS will be formed by developing further a huge infrastructure, which the National Police Agency (NPA) has been constructing for some years.
Samenvatting