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US 11,142,209 B2Granted
Vehicle road friction control
AssigneeFord Global Technologies, LLC
InventorsKyle Simmons, Eric Hongtei Tseng, Michael Hafner, Mohsen Lakehal-Ayat
Life of this patent
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Abstract
A road friction is determined for a road location based on a traffic speed determined from respective speeds of each of a plurality of vehicles. A vehicle can be operated based on the determined road friction.
Claims20
A method, comprising:
- determining a road friction for a road location based on a traffic speed determined from respective speeds of each of a plurality of vehicles;
- determining whether the traffic speed is below a threshold traffic speed, and determining the road friction based on the traffic speed only upon determining that the traffic speed is below the threshold traffic speed;
- and
- operating a vehicle based on the road friction.
1 more element
A computer comprising a processor and a memory, the memory storing instructions executable by the processor such that the computer is programmed to:
- determine a road friction for a road location based on a traffic speed determined from respective speeds of each of a plurality of vehicles;
- determine whether the traffic speed is below a threshold traffic speed, and determine the road friction based on the traffic speed only upon determining that the traffic speed is below the threshold traffic speed;
- and
- operate a vehicle based on the road friction.
1 more element
A computer comprising a processor and a memory, the memory storing instructions executable by the processor such that the computer is programmed to:
- determine whether the traffic speed is below a threshold traffic speed, the traffic speed being determined from respective speeds of each of a plurality of vehicles;
- upon determining the traffic speed is below the threshold traffic speed, determine a second datum that is one of whether the location includes a bridge or overpass, a status of daylight, a rain condition, a snow condition, a fog condition, a construction condition, a presence or absence of an emergency vehicle, a presence or absence of debris, or an ambient temperature;
- determine the road friction based on the second datum;
- and
- operate a vehicle based on the road friction.
2 more elements
Dependencies are inferred from the claim text.