In 2008 DENSO began tests of vehicle-to-vehicle communication systems on public roads in Abashiri, Hokkaido, Japan.

Vehicle-to-vehicle communication allows vehicles to interact with each other via radio waves by sending and receiving information. This technology is expected to improve traffic safety, such as in the prevention of vehicle collisions and assist in the reduction of traffic jams and ultimately CO2 emissions. The system uses a wireless radio device mounted on the vehicle.

In the tests, DENSO will conduct vehicle-to-vehicle communication using its in-vehicle communications devices at the Ultra High Frequency band between 669 and 679 MHz, and frequency band between 5811.5 and 5828.5 MHz to measure noise and other conditions while vehicles are traveling.
 
DENSO Abashiri Testing Center Corporation, DENSO’s subsidiary in Abashiri, has proving grounds that will enable an effective comparison of results from tests performed on public roads and those of tests performed on a test track. Abashiri was also chosen as the test location for its preferable geographical and climate conditions.

The technology is expected to be available commercially in 2012.