Abstract: A system includes an inspection robot, comprising a plurality of wheels that engage an inspection surface; a plurality of sensors positioned to interrogate the inspection surface; and wherein the plurality of wheels each comprise a first magnetic hub coupled to a second magnetic hub, and wherein the plurality of wheels further define a channel between the magnetic hubs.

Abstract: A system is revealed comprising existing dual-mode road-rail vehicles and railway vehicles with all vehicles having modern wireless mobile communications and GPS facilities, operating on existing railways, roadways, and roadway-railway crossings for the transportation, pickup, and drop off of passengers and of goods within and about an urban city environment. Fundamental to this system is incorporation methods of modern computer vehicle monitoring and marshalling facilities administering computer fuzzy logic assessment active engines for scheduling, monitoring, and controlling the operation of the vehicles and for providing the communications with the vehicles and the marshalling facilities in the network.

Abstract: A drive unit for a road-rail vehicle having at least four wheels, for movement on rails, wherein each wheel is driven by a separate hydraulic motor. Further the hydraulic motors driving the wheels situated on one side of a longitudinal central axis of the vehicle are connected in parallel.