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Illustration of track circuit invented by William Robinson in 1872 Track circuit transformer on the right, new axle counter on the left (Slovenia). A track circuit is an electrical device used to prove the absence of a train on a block of rail tracks to control railway signals. An alternative to track circuits are axle counters.
Indian Railways is a state-owned enterprise that is organised as a deparmental undertaking of the Ministry of Railways of the Government of India and operates India's national railway system. [ a ] As of 2023 [update] , it manages the fourth largest national railway system by size with a track length of 132,310 km (82,210 mi), running track ...
Indian railways operates a 68,584 km (42,616 mi) 1,676 mm (5 ft 6 in) broad gauge network which is equipped with long-welded, high-tensile 52kg/60kg 90 UTS rails with pre-stressed concrete (PSC) sleepers and elastic fastenings. [1] These tracks are shared by both freight and passenger trains with passenger trains often priortized on the network.
However, when a train enters the section, it short-circuits the current in the rails, and the relay is de-energized. This method does not explicitly need to check that the entire train has left the section. If part of the train remains in the section, the track circuit detects that part.
In Auckland, New Zealand, axle counters have been used on all lines where track circuits are required, except for special places where Hi Rail maintenance vehicles either on or off track. All road crossing tracks at public level crossings are deemed to be Hi Rail access points and a short single rail DC track circuit is used.
Indian Railway minister Ashwini Vaishnaw was travelling in one locomotive travelling in one direction, while Vinay Kumar Tripathi, chairman and CEO of Indian Railway was travelling in another locomotive on the opposite direction on the same track while Kavach was operational. It successfully detected that both locomotives were on the same track ...
In the 1850s, the Great Indian Peninsula Railway adopted the gauge of 1,676 mm (5 ft 6 in) for the first passenger railway in India between Bori Bunder and Thane. [1] [2] This was then adopted as the standard for the nationwide network. Indian Railways today predominantly operates on 1,676 mm (5 ft 6 in) broad gauge. Most of the metre gauge and ...
Locomotives are classified by track gauge, motive power, function, power rating and model in a four- or five-letter code. [21] The locomotives may be Longer Hood Front (LHF), where the driver cabin is behind the hood of the engine or Short Hood Front (SHF), where the cabin is located towards the front.