1. A method of detecting a lane change of a subject vehicle ( 20 ) having a locating device ( 10 ) which uses angular resolution for locating vehicles (VEH 1, VEH 2, VEH 3 ) traveling in front, and a device ( 44 ) for determining the yaw rate (&ohgr; 0 ) of the subject vehicle, wherein the angular velocity (&ohgr; i ) of at least one vehicle traveling in front relative to the subject vehicle ( 20 ) is measured using the locating device ( 10 ), and a lane change signal (LC) indicating the lane change is formed by comparing the measured angular velocity (&ohgr; i ) to the yaw rate (&ohgr; 0 ) of the subject vehicle.