Experience of Swiss federal post office with Nyberg caterpillar tread buses, snow plows, and special snow removing caterpillar tractors equipped with two paddle wheels in front, for discharge of snow; clearing mountain highway, 10 to 12 per cent grade, of 3-4 m. snow depth; next year's program.
Winter operation of motor buses
Zur Frage des Winterbetriebes mit Kraft-omnibussen
Verkehrstechnik ; 40 , n 35
1927
5 pages
6 Figs.
Article (Journal)
German
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