US 11,884,279 B2
System and method for providing vehicle safety distance and speed alerts under slippery road conditions
Saurabh Gawande, Gothenburg (SE); Srikar Muppirisetty, Mölndal (SE); Sohini Roy Chowdhury, Santa Clara, CA (US); and Minming Zhao, Mountain View, CA (US)
Assigned to Volvo Car Corporation, Gothenburg (SE)
Filed by Volvo Car Corporation, Gothenburg (SE)
Filed on Mar. 17, 2023, as Appl. No. 18/122,800.
Application 18/122,800 is a continuation of application No. 17/475,600, filed on Sep. 15, 2021, granted, now 11,628,844.
Application 17/475,600 is a continuation of application No. 16/728,024, filed on Dec. 27, 2019, granted, now 11,124,193, issued on Sep. 21, 2021.
Application 16/728,024 is a continuation in part of application No. 16/541,264, filed on Aug. 15, 2019, granted, now 11,592,566, issued on Feb. 23, 2023.
Application 16/541,264 is a continuation in part of application No. 15/969,973, filed on May 3, 2018, granted, now 10,706,294, issued on Jul. 7, 2020.
Prior Publication US 2023/0219577 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B60W 40/068 (2012.01); B60W 50/14 (2020.01); B60W 30/14 (2006.01); B60W 30/09 (2012.01); B60W 60/00 (2020.01); G06V 20/56 (2022.01); B60W 40/105 (2012.01)
CPC B60W 40/068 (2013.01) [B60W 30/09 (2013.01); B60W 30/14 (2013.01); B60W 40/105 (2013.01); B60W 50/14 (2013.01); B60W 60/0015 (2020.02); G06V 20/56 (2022.01); B60W 2050/143 (2013.01); B60W 2050/146 (2013.01); B60W 2552/40 (2020.02); B60W 2554/80 (2020.02)] 20 Claims
OG exemplary drawing
 
10. A method for determining and utilizing vehicle safety distance and speed information, comprising:
receiving and formulating detected road friction data from one or more on-board vehicle sensors related to detected road friction in the proximity of a vehicle and predicted road friction data from one or more vision/perception vehicle sensors related to predicted road friction ahead of the vehicle;
determining a safety distance based on a determined function of the detected road friction and the predicted road friction, a safety speed, a warning distance based on a determined function of the predicted road friction, and a warning speed of the vehicle with respect to another vehicle or an object taking into account the detected road friction data and the predicted road friction data; and
presenting the warning speed to a driver of the vehicle.