Abstract: Disclosed is a control method for use in a system for controlling a distance between vehicles. The method comprises a) controlling, in response to the leading vehicle's deceleration, deceleration of the control vehicle; b) controlling stop speed of the control vehicle so that the control vehicle approaches the leading vehicle at a constant speed without stopping; c) controlling the control vehicle to stop smoothly exactly at a position spaced from the leading vehicle by a predetermined stop distance; and d) controlling the start of the control vehicle after determining whether the leading vehicle has started or moved forward.

Abstract: Disclosed herein is a forward vehicle sensing system for a vehicle. The system includes a sensor and a control unit. The sensor monitors conditions of a road ahead of the vehicle. The control unit detects stationary objects placed on edges of the road, calculates an imaginary line from the consecutive stationary objects, and recognize a prior transverse position of a forward vehicle as a current transverse position of the forward vehicle when determining that an absolute value of a transverse position of the forward vehicle detected on the road is greater than an absolute value of a transverse position of the imaginary line. Therefore, the system of the present invention can prevent the forward vehicle from being incorrectly sensed in such a way as to determine the imaginary line from the stationary objects and compare the transverse position of the forward vehicle to that of the imaginary line.