Toyota Motor Corporation (TMC) has announced it has developed, in coordination with an effort in Japan to develop next-generation roads, an onboard DSRC (dedicated short-range communications) unit intended to increase traffic safety by providing drivers real-time, close-vicinity traffic information. TMC plans to offer the DSRC unit in Japan on a new vehicle model soon to be launched.
The navigation-system-linked DSRC unit, through the use of intelligent transportation systems (ITS) technologies, including Japan’s electronic toll collection framework, receives a wide range of traffic information via vehicle-infrastructure communications and provides it to highway drivers in visual form and through voice guidance. It alerts drivers to obstacles they cannot see on the road ahead around curves, such as stopped vehicles and stopped-up traffic. It also alerts drivers to merging vehicles.
A roadside DSRC device sends traffic information and other information to help increase driving safety to the onboard DSRC unit; the unit then passes on the information to the driver through the navigation system in written, graphic or other image form or through voice guidance.
Types of information:
1) Information concerning difficult-to-see obstacles such as stopped vehicles or traffic congestion beyond curves is provided through the navigation system, before the vehicle enters the curve.
2) Information concerning the presence of merging vehicles is provided through the navigation system, when approaching areas in which merging vehicles are hard to see.
3) Information concerning traffic conditions is provided through the navigation system, at tunnels and other areas that are frequently congested.
4) The DSRC unit provides information on present location, highway entrances and exits and simplified presentation of highway signs.
Source: Toyota Motor Corporation.