Automatic longitudinal control of highway vehicles

The requirements of automatic control of vehicles on expressways are stated and the design of a system to meet the requirements is described. The system is based on control by equipment (computers) carried by the vehicles responding to information as to the positions and speeds of surrounding vehicles transmitted to the controlled vehicle through road circuits. A suggested design for these circuits is described. A method for automatic lane-changing is described and the problem of compatibility of automatic and manually-controlled vehicles using the same lanes is discussed.