US 11,912,311 B2
System and method of detecting and mitigating erratic on-road vehicles
Gabriel Tayoung Choi, Novi, MI (US); Paul A. Adam, Milford, MI (US); Namal P. Kumara, Ypsilanti, MI (US); and Christopher Michael Churay, Farmington Hills, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Aug. 10, 2021, as Appl. No. 17/398,597.
Prior Publication US 2023/0052137 A1, Feb. 16, 2023
Int. Cl. B60W 30/09 (2012.01); B60W 30/18 (2012.01); B60W 50/14 (2020.01); B60W 60/00 (2020.01)
CPC B60W 60/00274 (2020.02) [B60W 30/09 (2013.01); B60W 30/18163 (2013.01); B60W 50/14 (2013.01); B60W 2520/10 (2013.01); B60W 2554/4041 (2020.02); B60W 2554/4042 (2020.02); B60W 2554/4046 (2020.02); B60W 2555/60 (2020.02); B60W 2720/10 (2013.01); B60W 2754/20 (2020.02); B60W 2754/30 (2020.02)] 15 Claims
OG exemplary drawing
 
1. A method of detecting and mitigating an erratic vehicle by a host vehicle, comprising:
gathering external sensor information on an external region surrounding the host vehicle;
analyzing the external sensor information to detect a target vehicle traveling in a lane and a movement of the target vehicle in the lane;
determining whether the movement of the target vehicle in the lane meets at least one predetermined condition for being the erratic vehicle;
assigning a risk score to the target vehicle when the movement of the target meets the at least one predetermined condition for being the erratic vehicle; and
implementing a predetermined mitigating action correlating to the assigned risk score to the target vehicle;
wherein the predetermined mitigating action includes at least one of: warning an operator of the host vehicle, warning a vehicle proximal to the host vehicle, and taking at least partial control of the host vehicle to further increase a distance between the host vehicle and the target vehicle; and
wherein determining whether the movement of the target vehicle in the lane meets the at least one predetermined condition for being the erratic vehicle includes:
analyzing the external sensor information to determine a target vehicle centerline and a lane centerline; and
determining a frequency of oscillation when the target vehicle centerline oscillates over the lane centerline above a predetermined lateral off-set distance; and
wherein the at least one predetermined condition includes the frequency of oscillation is above a predetermined frequency.