Mobile ramp PORA 3500 can be used alternatively to standard system of laying of 75 m long rail pieces from special wagons into rail track. The proposed design of mobile ramp PORA 3500 is intended to be used with standard platform wagons.

Ramp is coupled to standard wagon hook and is driven by means of one railway axle. All equipment is designed for positioning of rail pieces approximately into axis of rails and for placing of rail piece ends without frames onto sleepers. Placing of rail pieces is performed by moving of platform wagons train.