Driver assistance system for motor vehicles

A driver assistance system for a motor vehicle, which is a host vehicle, comprising:

• a locating system configured to locate preceding vehicles;
• and
• a longitudinal guidance module configured to control longitudinal movement of the host vehicle as a function of location data of located objects;
• wherein the longitudinal guidance module includes a driving path module to define a driving path ahead of the host vehicle, and an adaptive cruise control function to adjust a time gap between the host vehicle and a target object located inside the driving path to a setpoint value,
• wherein the longitudinal guidance module further includes a dynamic function to, under particular conditions indicating that the target object will leave the driving path, modify the longitudinal guidance function when a driver commands a commencement of an acceleration in response to a command of a driver,
• wherein the dynamic function modifies the longitudinal guidance function by reducing a width of the driving path,
• wherein when the width of the driving path is to be reduced, checking whether a lateral offset is positive or negative, when the lateral offset is negative, a right boundary of the driving path is shifted to the left, and wherein when a transverse offset is positive, a left boundary of the driving path is shifted to the right,
• wherein the dynamic function becomes available when the adaptive cruise control function is active, the brake pedal is not actuated by the driver of the host vehicle, and the driver of the host vehicle does not intend to initiate a lane change so that the turn signal is not activated,
• wherein the dynamic function is only triggered and the driving path is reduced when the following conditions are satisfied:
• (a) a velocity of the host vehicle is above a first threshold value;
• (b) an absolute value of a transverse offset of the vehicle is above a second threshold value, which indicates that the vehicle is leaving or about to leave the driving path, wherein the transverse offset is defined as a lateral deviation of the vehicle from a center of the driving path;
• (c) a curvature of the driving path is below a third threshold value;
• and
• (d) actuation of a gas pedal or a twist grip is above a fourth threshold value.