An apparatus and method for generating a collision warning to a driver of a host vehicle. The method estimates geometry of a lane of a road in which the host vehicle is traversing and further identifies, via a non-line-of-sight sensor, at least one remote vehicle traversing ahead of the host vehicle in the estimated lane of the road. The host vehicle tracks, via a line of sight sensor, a preceding vehicle traversing directly ahead of the host vehicle in the estimated road-lane and detects a speed of a slowest remote vehicle of the at least one identified remote vehicles. The host vehicle predicts a motion of the preceding vehicle based on the detected speed of the slowest remote vehicle and an inter-vehicle distance, and generates a warning to the driver of the host vehicle based on the predicted relative motion of the preceding vehicle to the host vehicle.