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Cadillac demonstrates V2I capability with traffic siginals

Cadillac’s CTS sedan, one of the first production vehicles to contain Vehicle-to-Vehicle (V2V) communication (earlier post), has now successfully demonstrated Vehicle-to-Infrastructure (V2I) capability in Michigan. Cadillac CTS development vehicles received real-time data from traffic controllers on signal phasing and timing during successful demonstrations recently conducted in collaboration with Michigan road agencies.

V2I connects the Cadillac development vehicles to its surrounding infrastructure, allowing the vehicle to alert the driver of safety, mobility or environment-related conditions ahead.


The traffic signals, located adjacent to the GM Warren Technical Center campus at the intersections of 12 Mile and 13 Mile roads, were able to send real-time data using Dedicated Short-Range Communications (DSRC) protocol to the development vehicles, which alerted the drivers of a potential red light violation at current speed. This alert helps avoid the dangerous decision to either brake abruptly or accelerate through a busy intersection.

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 1,000 messages per second from vehicles up to about 1,000 feet 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 US and Canada and complements a robust suite of available active safety features.



Cadillac would do well to produce an all electric car ASAP to save the brand; this kind of far out V2V PR does little to help the brand recover from years of poor decisions by GM. Cadillac should be tasked with leading GM into the future with a great BEV.

BTW, if GM and the other American makers don't start offering BEVs soon, it may be too late. Toyota finally saw the light and has started the transition. Even the back-marker Ford has started working in a serious way toward EVs. The internal combustion engine is obsolete so why continue to offer them in automobiles and trucks?


Must be a TYPO?

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

Traffic laws in NSW state it is an offence to accelerate on the amber caution light.
To suggest acceleration into danger is suicidal.


All the cars with sensors communicating V2V and V2I can create a good map of traffic conditions, this can help the auto assist and autonomous driving.

Aaron Turpen

Lad, your miopic view is amusing. Cadillac sales are up not just in the U.S., but globally. And have been since the recession. GM has EVs.. the Bolt, the Volt, the Spark, and the ELR to name a few. GM is also the recognized leader in fuel cell technologies and just JV'd with Honda for production.

Your statement that the ICE is "obsolete" is also hilarious. We have at least another 50 years of ICE dominance in automotive. Battery electrics currently make up about 1% of the overall market and electrified vehicles about 3-4% of it. Automotive moves in decades, not weeks.

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