The road traffic control system deployed by the Metropolitan Police Department (MPD) thatstarted operation in 1995 has been contributing to smoother and safer road traffic in themetropolitan Tokyo through the advancement of its signal control and information provisionfunctions. Although goals are set to improve specific functions every year since 2005, 10years after its inauguration, the operation to make the most of such functions is equallyimportant.This paper explains the outline of functional improvements added to the road traffic controlsystem over the last 5 years, as well as the MPD activities to maintain more than 20,000vehicle detectors installed on the roads for various purposes.
展开▼
