The UST 79 S universal tamping machine is equipped with two bogies for working travel and with a three-axle road chassis and a semitrailer for transport by road.
This road-rail mobility enables transfer of the machine independently of the timetable and access to ballasted tracks, such as those of urban transport authorities, without difficulty. This ensures that even on rail networks with awkward access the UST 79 S makes it possible to perform maintenance with the highest quality at regular intervals.
Despite its compact dimensions the machine is equipped with the necessary work units: heavy-duty tamping units, lifting and lining unit, measuring systems, sleeper-end consolidators, levelling and alignment laser, recording unit, etc. The machine can be used in tracks and turnouts.