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A guide rail is a system designed to guide vehicles back to the roadway and away from potentially hazardous situations. [4] There is no legal distinction between a guide rail and a guard rail . According to the US Federal Highway Administration , the terms guardrail and guiderail are synonymous.
Plate rail was an early type of rail and had an 'L' cross-section in which the flange kept an unflanged wheel on the track. The flanged rail has seen a minor revival in the 1950s, as guide bars, with the Paris Métro (Rubber-tyred metro or French Métro sur pneus) and more recently as the Guided bus.
The line originally used wooden rails and a hemp haulage rope and was operated by human or animal power, through a treadwheel. [9] The line still exists and remains operational, although in updated form. It may be the oldest operational railway. [10] Minecart shown in De Re Metallica (1556). The guide pin fits in a groove between two wooden planks.
The first American locomotive at Castle Point in Hoboken, New Jersey, c. 1826 The Canton Viaduct, built in 1834, is still in use today on the Northeast Corridor.. Between 1762 and 1764 a gravity railroad (mechanized tramway) (Montresor's Tramway) was built by British Army engineers up the steep riverside terrain near the Niagara River waterfall's escarpment at the Niagara Portage in Lewiston ...
North American rail network: 1,435 mm (4 ft 8 + 1 ⁄ 2 in) Preferred minimum on freight main lines 160 m (525 ft) Lithgow Zig Zag: 1,435 mm (4 ft 8 + 1 ⁄ 2 in) 40 km/h 125 m (410 ft 1 + 1 ⁄ 4 in) North American rail network: 1,435 mm (4 ft 8 + 1 ⁄ 2 in) Minimum radius for general service 120 m (390 ft) [9] Bay Area Rapid Transit: 1,676 ...
The object of the guard rail is to prevent a derailed truck from getting far enough off the track to strike any portion of the girder, or from becoming twisted so as to lead to further derailment ... guard rails are requisite, so arranged as to bring a derailed truck nearly back to its proper position and guide it across the bridge without allowing it to deviate more than a few inches from the ...
A strategy was adopted in 2004 to guide enhancements of loading gauges [27] and in 2007 the freight route utilisation strategy was published. That identified a number of key routes where the loading gauge should be cleared to W10 standard and, where structures are being renewed, that W12 is the preferred standard.
Map of the Trans-Pennine Routes. The TRU relates to the Huddersfield line, shown in light blue. Calder Valley line for comparison. The Transpennine Route Upgrade (TRU) is a major investment being made in the railway between York and Manchester via Leeds and Huddersfield – the 76 miles (122 km) northern route over the Pennines, [1] most of which is also known as the Huddersfield line.
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