Audi is using high-precision swarm data for the first time to improve its car-to-X service “local hazard alerts”.

The manufacturer says it is using a new version which uses a car-to-cloud application that is based on a novel procedure for estimating the coefficient of friction on the basis of the wheel slip.

The company says the technology can detect minute changes in road surface adhesion, upload the data to the cloud to be processed, and then warn drivers behind of road ice, for example, in near real time.

Since 2017, Audi cars have been able to warn each other about collisions, broken-down vehicles, traffic jams, road ice, or limited visibility. To do this, the car-to-X service “local hazard alerts” analyze various things including interventions of the electronic stabilization control (ESC), rain and light sensors, windshield wipers, and headlights, as well as emergency calls and airbag triggering.

Audi says it is now improving the service with high-precision swarm data to make the warning even faster and more precise.

It is the first manufacturer to use a patented solution from Swedish company NIRA Dynamics AB for this purpose. The two companies used this solution as a basis to develop the improved hazard alerts together with the Car.Software organization and HERE Technologies.

“The improved hazard information service is just the beginning; we see wide-ranging potential for the future,” said Müller, Head of Advanced Driving Assistance Systems ADAS & Automated Driving AD at the Car.Software organization.