Mechanically trackable road vehicle

A bi-mobile mechanically trackable vehicle adapted to be driven with or without a guide track, the vehicle including a steerable axle having steerable wheels mounted thereon, at least one additional non-steerable axle having non-steerable wheels mounted thereon, a plurality of tracking transverse guide roller means for guiding the vehicle along the guide track, means for at least indirectly mounting the transverse guide roller means at the respective axles in an area of the respective wheels of the vehicle, means for mounting the at least one non-steerable axle on the vehicle so as to be freely pivotable about a vertical axis, and means for selectively locking the at least one non-steerable axle in an exact transverse position for driving without a guide track and for unlocking the at least one non-steerable wheel from said transverse position, characterized in that the means for at least indirectly mounting the transverse guide roller means includes means for enabling at least one of the transverse guide roller means to be transversely displaceable within preset limits, means are provided for elastically tensioning said at least one guide roller means so as to move the same from a first end position defining an operating position to a second end position, said first and second end positions are within the preset limits, and in that means movable with the at least one transverse guide roller means are provided for coupling the transverse guide roller means with the selective locking and unlocking means so as to automatically unlock the at least one non-steerable axle wheel when the at least one transverse guide roller means is in the operating position and for automatically locking the at least one non-steerable axle wheel when the transverse guide roller means is in the second end position.