CTS development vehicles have demonstrated the concept, receiving real-time data from traffic signals near GM's Warren Technical Center.

General Motors is moving forward with vehicle-to-infrastructure (V2I) development after rolling out vehicle-to-vehicle (V2V) communications technology with the production CTS sedan.

The company has successfully demonstrated V2I capabilities near its Warren Technical Center campus. Traffic signals at the intersections of 12 Mile and 13 Mile roads were upgraded to send real-time data, including light phasing and timing, via a dedicated short-range communication (DSRC) protocol.

Cadillac CTS development vehicles receive the information to present traffic-light status information on digital displays. Drivers are alerted to potential red-light violations at their current speed.

"This alert helps avoid the dangerous decision to either brake abruptly or accelerate through a busy intersection," the automaker says.

Vehicles do not transmit any identifying information, preventing authorities from using such V2I or V2V tech to ticket drivers who run a red light.

V2V is currently a standard feature on the 2017 CTS sedan in the US and Canada. The company has not outlined a launch window for V2I tech in production cars. In the meantime, Audi aims to be among the first to roll out V2I for its latest A4, Q7 and Allroad models.