An automatic guided vehicle has a detector for detecting a distance between the vehicle and an object and then outputting a distance signal, and a controller for controlling the speed of the vehicle according to the distance signal and for operating in one of a succeeding vehicle mode under which the...http://www.google.fr/patents/US5170351?utm_source=gb-gplus-shareBrevet US5170351 - Automatic guided vehicle and method for controlling travel thereof
Automatic guided vehicle and method for controlling travel thereof