Section 4 ITS toward Standard Deployment

Traffic Management System


-Advanced traffic management systems already developed
Advanced traffic management systems have already been developed on expressways administered by the Japan Highway Public Corporation and the Metropolitan Expressway Public Corporation to process traffic information smoothly and ensure safe and pleasant traffic flow. Extending a total of 7300 km of expressway across the country, these systems perform the broad functions of information collection, information processing and information supply.

-To collect information with high-tech devices
Various sensors, including vehicle detectors and CCTV cameras for traffic control, are installed along highways to gather information on road traffic. Also installed are a weather survey equipment to measure wind direction and velocity, a road surface hygrometer to measure water and snow on road surface, a road surface thermometer, an ultrasonic snow depth measuring device, a snowfall detector and a rainfall sensor.

vehicle detectors CCTV camera for
traffic control
weather survey
equipment

-Control center for quick information processing
Road data collected through various sensors is transmitted to traffic control centers for processing to determine the traffic volume, velocity and occupancy. Traffic congestion is shown in colors on a traffic condition display board. Images collected through traffic control TV cameras are displayed on a monitor for traffic management.

traffic conditions display
panel
zoomed-in picture of traffic
conditions display panel
information processing
with computers

-To provide information in various ways
Processed data is provided through various message signs installed along highways. The information that is provided through variable message signs and graphic information boads includes traffic congestion, accidents, construction work and travel time.

variable message singns graphic information boads travel time information
boads

-MEX-i Robot
Easy-to-use MEX-i robots are installed at parking areas of the Metropolitan Expressway. Using a keyboard, you can get easy access to information on travel time via alternate routes, wide-area traffic congestion, accidents, construction work and weather conditions, all of which can be displayed on the monitor.

traffic congestion information display display of information on accidents, construction work and weather conditions

MEX-i robot traffic congestion information display (in English) travel time display (in English)



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