Cadillac builds on V2V deployment with V2I development
Cadillac announced that its CTS sedan has successfully demonstrated Vehicle-to-Infrastructure (V2I) capability during tests near the GM Warren Technical Center in Michigan. Real-time data was received from traffic controllers on signal phasing and timing. The data from the controllers was sent using Dedicated Short-Range Communications (DSRC) protocol, which alerted the drivers of a potential red light violation at the vehicle’s current speed.
To ensure the privacy of the driver, the vehicles do not transmit any identifying information such as VIN number, registration, or MAC address in their messages. For example, if a connected car runs a red light, the traffic signal may be able to say someone ran a red light, but will not be able to say who or what vehicle. As for cybersecurity, firewalls and other measures are used to ensure the DSRC signals cannot be interfered with and are only exchanged between the vehicle and the infrastructure. This is similar to the encryption used on Cadillac’s V2V technology.
The Michigan Department of Transportation, Macomb Country Department of Roads, and General Motors’ Research & Development are collaborating to showcase leadership in the connected and automated vehicle environment.
Cadillac's V2V solution uses GPS for positioning and DSRC for communication, which can handle 1000 messages per second from vehicles up to about 1000ft (300m) away. V2V-equipped vehicles create an ad hoc wireless network that allows for the transfer of information without relying on sight lines, good weather conditions or cellular coverage.
V2V is included as a standard feature on the 2017 CTS sedan in the U.S. and Canada and complements a suite of available active safety features.