-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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