VEHICULAR TRAILERING ASSIST SYSTEM

A vehicular trailering assist system includes a rear backup camera disposed at a vehicle and viewing at least rearward of the vehicle and at least a portion of a trailer hitched to the vehicle. The camera captures frames of image data that include image data representative of at least a portion of the trailer hitched to the vehicle. Frames of image data captured by the camera are processed at an electronic control unit during a calibration maneuver by the vehicle to determine a trailer collision angle. The vehicular trailering assist system, after completion of the calibration maneuver, determines a current trailer angle of the trailer relative to a longitudinal axis of the vehicle as the vehicle is driven along the road. The vehicular trailering assist system determines whether the current trailer angle is within a threshold amount of the determined trailer collision angle.