Track type transportation system

Abstract

In a track type protection system comprising an automatic steering mechanism and a fail-safe mechanism, provided is a detection mechanism which can detect a deviated value of a vehicle, widthwise of a track, and which is highly reliable. The track type transportation system in which the vehicle runs on the road surface of the track, comprising the steering mechanism for automatically steering the front and rear wheels of the vehicle by means of actuators, and the fail-safe mechanism composed of a protection track defined on the road surface of the track, and protection wheels provided in the lower part of the vehicle and adapted to run in the protection track without making contact with the protection track, wherein there are provided a pair of noncontact type displacement meterswhich are attached to a support bracketsuspended downward from the lower part of the vehicle body, and which are arranged in the protection trackso as to irradiate detection waves a onto the left and right side wallsof the protection track, thereby the distances from the noncontact type displacement metersto the left and right side walls of the protection track are measured by the pair of noncontact type displacement meters.