The traction is through the rubber tyres in the same manner as when it is used on the road. The Unimog has both automatic railway couplers and a compressor for railway carriage brake air. It has also a sanding system for operation under slippery conditions. The NSB has been using similar but weaker Mercedes Unimogs in earlier years. The Unimog is used for the same duty as a Skd220 tractor.
Traction is best when running forwards.
3 seats including driver Tractor Class 223 The class 223 tractor is an electrical accumulator tractor. The batteries are charged through the pantograph while the tractor is parked. The pantograph must be in the lower position while the tractor is in service. B Wheel diam.