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Road–rail excavator British jeep in France, 1945. A road–rail vehicle or a rail–road vehicle is a dual-mode vehicle which can operate both on rail tracks and roads. [1] [2] They are also known as two-way vehicles (German: Zweiwegefahrzeug), [3] hi-rail (from highway and railway, or variations such as high-rail, HiRail, Hy-rail [failed verification]), [4] and rail and road vehicles.
The system uses a pair of narrow gauge (750 or 1,000 mm) rails laid in a pit that is built in the middle of a standard gauge track, which is elevated by about 30 cm. It allows the Rollbock bogies to sit underneath the standard gauge tracks and as the Rollbock train is pulled out of the Rollbock siding each bogie picks up one axle of a standard ...
Track gauge conversion is the changing of one railway track gauge (the distance between the running rails) to another. In general, requirements depend on whether the conversion is from a wider gauge to a narrower gauge or vice versa, on how the rail vehicles can be modified to accommodate a track gauge conversion, and on whether the gauge conversion is manual or automated.
An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.
The primary reason that the original RoadRailer concept was not viable was the weight penalty imposed on the trailers because of the attached railroad wheelset. This was resolved in later designs which removed the integrated wheelset by having a dedicated rail bogie assembly that stayed in the rail yard, as seen today. [citation needed] [9]
The standard-gauge International–Great Northern Railroad and the narrow-gauge National Railroad of Mexico used an unknown hoist at Laredo, Texas in the 1890s to exchange trucks to permit through traffic. [26] The Sedalia, Warsaw and South Western Railway used an unknown hoist in the 1890s to run standard gauge cars on narrow gauge trucks as ...
Convertible flat/open trucks— N QR [ edit ] The N QR class of trucks were the staple of the Victorian Railways' narrow gauge fleet. 218 examples were constructed between 1898 and 1914, [ 1 ] designed as an open wagon with removable end panels as well as three drop-down but removable doors either side.
The line has four rails with metre gauge laid within standard gauge. There are some dual-gauge (standard and Iberian) sidings at Cerbère on the Spanish border. Germany. In the 1970s, the Stuttgarter Straßenbahnen tram lines underwent a gauge conversion from 1000 mm (3 ft 3 + 3 ⁄ 8 in) gauge to standard gauge.