Abstract: An electrically driven rail or track bound vehicle which can be supplied with electrical power from an overhead wire. The vehicle includes a current collector carrying at least one bow trolley, with the current collector being adjustable to varying levels. A width of the bow trolley is automatically variable in such a manner that, with the current collector being adjusted to a low level, the bow trolley is narrow and with the current collector being adjusted to a high level, the bow trolley has a wide width. The width of the bow trolley is variable continuously with height variations of the current collector.

Abstract: A motor vehicle adapted to be used on tracks, especially for the public local passenger traffic, with a steerable vehicle axle and with at least one non-steerable vehicle axle and with track-determining cross-guide rollers arranged on both sides of the vehicle which are provided at least within the area of the steerable wheels and are supported near the end points of mounting arms that are relatively fixed; a force-measuring device for determining the cross-guide force is provided in the mounting or bearing support of at least one of the cross-guide rollers of each vehicle wheel while a brake pressure medium valve is adapted to be influenced by the force-measuring device in such a manner that a brake deceleration is automatically initiated when the vehicle exceeds a threshold value of the cross-guide force.

Abstract: A traffic system consisting of vehicle and road, in particular for the public local passenger traffic, with automatically cross-controllable vehicles, with a track-determining guide device extending along a desired track and with a cross-positional controller in the vehicle detecting the course of the guide device and acting on the steerable wheels of the vehicle; for purposes of catching a vehicle that deviates from the track, an emergency safety channel delimited by vertical side webs is provided along the road between the support wheels of the vehicle, whose width corresponds to the maximum permissive cross-positional tolerance of the vehicle on the road without lateral collision; at least one emergency safety bolt which is normally taken along in the raised position and is adapted to be rapidly lowerable, is provided centrally of the vehicle at the bottom side thereof; the safety bolt is able to support itself at the side webs of the emergency safety channel while feelers provided at the vehicle on both s