4-wheel steering for exceptional manoeuvrability in snow
The metre-high banks of snow on either side of the road demand precision work from the Unimog's driver. It is in situations like this that the transferable steering system VarioPilot and the 4-wheel steering system really come into their own. With 4‑wheel steering the Unimog becomes considerably more manoeuvrable than it already is, while its turning circle is reduced by up to 30 percent. It means that the snow cutter can clear bends far more quickly these days. Before the advent of 4-wheel steering, it was necessary to begin by cutting extra bays into a bend in order to achieve the necessary curve radius. It was a long-winded process that involved a lot of turning and forward and backward manoeuv res. Mercedes-Benz Special Trucks now offers this unique technology as a variant for Unimog, Econic and all municipal and fire-fighting vehicles.
The Unimog fleet at the Felsenau depot comprises two U 500 models with 4-wheel steering as well as a third U 500. Then there are a U 1000 and a U 130, plus a 29-year-old U 406, known affectionately by the Felsenau team as the "Buffalo". It is apparently indestructible and can be fitted with various attachments and implements to cope with even the trickiest operational situations that can arise on Alpine roads. Working in the heavy snow that fell earlier this year, the six Unimog vehicles were once again crucial to delivering the broad spectrum of activities demanded of the Felsenau fleet.
Best practice example for winter maintenance specialists from across Europe
The exemplary way in which the snow on the Arlberg was cleared – and the cost-effectiveness of this approach for the operator – also became a talking point among Alpine winter maintenance experts from across Europe. A stream of experts with an interest in this field have since made their way to the Vorarlberg to see the benefits of a Unimog with 4-wheel steering being demonstrated on the Arlberg Pass. Even the road maintenance service experts from Andorra, who have been Unimog customers for many years, were persuaded to come along and see for themselves the superior performance of the Unimog with 4-wheel steering. A demonstration of its capabilities on the Arlberg so convinced Andorra's representatives that they immediately placed an order for six Mercedes-Benz Unimog U 500 with 4-wheel steering.
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