(under the class definition) Apparatus for preventing cars from becoming derailed and for safeguarding them after derailment.
(1) Note. Subject matter under this definition includes track-like guides for steering a nontrack supported vehicle without the intervention of a power actuated means.
SEE OR SEARCH CLASS
180, Motor Vehicles,
401, for a motor vehicle provided with steering gear which includes a land-based steering datum and means on the vehicle for sensing the datum, which means cooperates with a steering motor on the vehicle for the purpose of controlling the course of the vehicle.