Lane keeping assistance equipment for automotive vehicles

A lane keeping assistance equipment loaded on an automotive vehicle having a response motion unit for controlling a steering of the automotive vehicle traveling on a traffic lane between lane markings, comprising:

• a lane marking detecting device for detecting a lane marking location;
• a sideways distance detecting device for detecting, based on said lane marking location detected by said lane marking detecting device, a sideways distance between the lane marking location and the automotive vehicle;
• a control device for performing lane keeping controls by creating and setting a travel target point at a position apart from said lane marking location, and transmitting a signal to the response motion unit for the automotive vehicle to travel on the travel target point involved;
• an intervening steering act detecting device for detecting intervening steering acts by a driver driving the automotive vehicle;
• and
• a measuring device for measuring an elapsing time after said intervening steering detected by said intervening steering act detecting device,
• wherein said control device updates a distance amount between said travel target point and the lane marking location, in correspondence with changes in the distance between said lane marking location and the automotive vehicle, at a time period during a continuing intervening steering act by the driver and an elapsing of a prescribed time after the ending of the steering act, and after said prescribed time elapses, sets the distance amount to said updated distance amount at the end of the elapsing of the prescribed time.