interpreted as limiting but merely as a representative basis for teaching one skilled in the art to variously employ the present invention fig1 shows a driver controlled vehicle such as a passenger car 1 including a schematic representation of the features of the vehicle which are relevant to the present invention the location of these features within the vehicle is not limited by the schematic representation in fig1 the car 1 includes wheels 10 a steering wheel assembly 20 having a steering wheel angle sensor 22 a gear box or transmission 40 having a device 42 for determining the currently selected transmission setting or gear a control device 100 having a memory 110 for storing data and a driver interface 50 proximity sensors 30 are provided on both lateral sides of the car the driver interface 50 includes a dashboard 52 having a visual display screen 54 a beeper or other sound generating device 56 and a collision warning selection button 58 a steering wheel angle sensor 22 is provided on or adjacent to a component of the steering wheel assembly 20 the sensor 22 senses the position of the component of the steering wheel assembly and using this data the control device 100 infers the instantaneous angle through which the steering wheel is turned in a clockwise or counter clockwise direction the position of the steering wheel at which the vehicle will travel directly forwards or backwards in a straight line.