Patent ID: 11912311
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 9:
10. An autonomous vehicle comprising:
at least one external sensor configured to collect sensor information on an external region surrounding the autonomous vehicle; and
a module configured to:
analyzing the sensor information to detect a target vehicle in a lane, a movement of the target vehicle in the lane, and a relative position of the target vehicle with respect to the autonomous vehicle;
determining the target vehicle is an erratic vehicle when the movement of the target vehicle includes at least one of: (i) oscillating over a centerline of the lane above a predetermine frequency, (ii) driving beyond a predetermined lateral offset from the centerline of the lane for greater than a predetermined length of time, (iii) fluctuating in speed relative to an average speed above a predetermined standard deviation, and (iv) changing lanes beyond a predetermined frequency; and
implementing a mitigating action including taking at least partial control of the autonomous vehicle to further distance the autonomous vehicle apart from the erratic vehicle;
wherein taking at least partial control of the autonomous vehicle to further distance the autonomous vehicle apart from the erratic vehicle, includes:
determining the relative position of the erratic vehicle to be in front of the autonomous vehicle;
determining a current speed of the autonomous vehicle and a maximum posted speed limit;
calculating an overtaking speed to pass the erratic vehicle; and
initiating a lane change overtaking routine when a sum of the current speed of the autonomous vehicle and the calculated overtaking speed is less than the maximum posted speed limit.