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Newsletter "SEI NEWS" 2012

Home > Company Information > SEI WORLD > Back number > Vol.421

[Newsletter "SEI NEWS" Vol.421]

Vehicle Infrastructure Integration System

It was in the 1960s that Sumitomo Electric first began research on a computer-controlled road traffic control system. Since then, the Company has contributed to society by enhancing road traffic safety and promoting environmental protection by making full use of IT.

■Product Data
Delivery record Safety driving support system consisting of an optical beacon was delivered in 2010 and put into service in July 2011 (Tokyo and Kanagawa)
Production bases Osaka Works (Production Systems Business Unit, Sumitomo Electric System Solutions Co., Ltd.)

Optical beacon head

 

Controller

 

U-wave antenna

What is a vehicle infrastructure integration system?

A vehicle infrastructure integration system links between divers, vehicles and infrastructure through communications between the vehicles and a roadside communication unit installed near an intersection. The vehicle infrastructure integration system therefore ensures safer and smoother traffic flows by providing a new service using information not available until now.

One example of a vehicle infrastructure integration system is the Driving Safety Support System (DSSS) currently under development. The DSSS will prevent drivers from failing to notice a traffic signal by giving them information about the signal before they arrive at the intersection. The system will also prevent side collision of a right-turning vehicle against a straight-running vehicle by detecting the latter, which is hard to see from the former, with a sensor and giving the information to the former. Sumitomo Electric is also working to develop a higher level of traffic signal control systems that acquire information on positions and direction indicators of the vehicles themselves.

What Services does the Sumitomo Electric Group Provide?

The Sumitomo Electric Group provides a whole range of road traffic control systems based on its abundant past experience in system construction and such elemental technologies as communications and sensing. Products range specifically from optical beacons, 700 MHz-band roadside wireless devices, vehicle detectors and other units located in the vicinity of intersections, to signal control algorithms for use in traffic control centers and information service management systems.

Conventional road traffic control systems are closed on the infrastructure side, while a vehicle infrastructure integration system is required to cooperate with the vehicles. Representing infrastructure system suppliers, Sumitomo Electric plays a central role in cooperating with automakers to realize viable vehicle infrastructure integration systems.

■Interview with engineer in charge
What type of work are you in charge of?

Yuichi Taniguchi/New ITS Development Dept., Sumitomo Electric System Solutions Co., Ltd.

I am a leader of the development group for road-to-vehicle communication devices (optical beacons and 700 MHz-band ITS wireless units) for use in vehicle infrastructure integration systems. I also attend meetings of an outside association to discuss the shape and standardization of vehicle infrastructure integration systems.

What are the difficulties in developing the vehicle infrastructure integration system?

The most challenging job for us in developing this system is how to find the optimal point of compromise between many requirements of outside stakeholders while ensuring system consistency with existing road traffic control systems.

Tell us about the product you have recently developed.

We are now developing a 700 MHz-band ITS wireless unit. In contrast to conventional optical beacons, whose use is limited to dedicated short-range communications, the new wireless unit can continuously update information in a wide area suitable for a vehicle infrastructure integration system. The new unit conforms to ARIB STD T-109, a wireless standard that was released in 2012. Aiming to commercialize this unit as early as possible, we will conduct outdoor function verification tests and serviceability/acceptability tests.

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