Patent ID: RE38870

Claim:
A collision avoidance system , for use involving at least one vehicle, said collision avoidance system comprising: a) a plurality of vehicle trigger sensors each at least one trigger sensor associated with a roadway, each said vehicle said at least one trigger sensor capable of sensing at least one parameter of one or more vehicles ; b) a plurality of vehicle restrictors each at least one vehicle restrictor associated with said roadway, each said said at least one restrictor comprising a n elongate member disposed generally transverse to said roadway, each said restrictor capable of being actuated to raise or lower relative to said roadway surface to impede passage thereover of said of the at least one vehicle s ; and c) a controller programmed to determine the an increased likelihood of a collision between involving any of said the at least one vehicle s based on said vehicle parameter s received from or by said trigger sensor s , programmed to determine which of a selected one or more of said vehicles that the at least one vehicle should be slowed or stopped to avoid said collision based on said vehicle parameter s and based on local traffic laws , and programmed to determine at least one selected vehicle restrictor that is being approached by said selected the at least one vehicle, wherein said at least one selected vehicle restrictor is actuated by communication from said controller to impede the passage of said selected the at least one vehicle to avoid said collision .