What is the relationship between speed, turning radius, and track cant? What are the cant excess / deficiencies specifications for IR tracks?

18-07-2019

Super-elevation, or cant, is provided to counteract the centrifugal tendency of trains on curves. On a canted curve (where the outer rail is higher than the inner one of the curve), the weight of the vehicle provides a component that counteracts the centrifugal tendency. Cant excess refers to the condition where the cant or superelevation is too much for the permitted speeds on the curve, while cant deficiency refers to the condition where the track is not canted enough for the speed of the trains. On BG track, cant excess and cant deficiency tolerances are 75mm. In special cases, cant deficiency can be as high as 100mm on sections with speeds of over 100km/h on 'A' and 'B' category

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Where are the important goods sheds and transshipment points of IR?
June 30, 2019

Here are the goods sheds attached to major centres: Agra: Raja-ki-Mandi Ahmedabad: Sabarmati Bombay (Mumbai): Carnac Bunder, Wadi Bunder, New Mulund, with additional freight yards at Bandra, Sion, Vashi, Kalyan, Borivli, Wadala / Raoli Junction; Wadala and Trombay have oil sidings. Turbhe in New Bombay (Navi Mumbai) deals with some parcel

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What is the history behind the 7 new zones created?
June 30, 2019

In 1984, the Railway Reform Committee had proposed the creation of four new zones to cope with the growth of freight traffic across the country and to rationalize the traffic handling of IR. This proposal went nowhere. In the 1990s IR had been considering setting up more zones, ostensibly to improve administrative and operational efficiency.

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What is the history behind the 7 new zones created?
June 29, 2019

In 1984, the Railway Reform Committee had proposed the creation of four new zones to cope with the growth of freight traffic across the country and to rationalize the traffic handling of IR. This proposal went nowhere. In the 1990s IR had been considering setting up more zones, ostensibly to improve administrative and operational efficiency.

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What are the voltages used for electric traction in India?
June 29, 2019

The 1.5kV DC overhead system (negative earth, positive catenary) is used around Bombay (This includes Mumbai CST - Kalyan, Kalyan - Pune, Kalyan - Igatpuri, Mumbai CST - Belapur - Panvel, and Churchgate - Virar). There are plans to change this to 25kV AC by 2010. In preparation for this, BHEL has been retrofitting some Alstom EMUs with AC drives

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How are freight wagons classifed by Indian Railway ?
June 29, 2019

The following codes are used now for classifying freight wagons . The classification scheme is not entirely systematic. Older wagons especially have codes that are not easily explained in this way. But in general an optional gauge code is followed by a type code which is followed by an indication of the coupler and whether the wagon is

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Why are multiple aspect signalling systems used? What was wrong with the older systems which had two aspects?
June 29, 2019

Multiple aspect signals, by providing several intermediate speed stages between 'clear' and 'on', allow high-speed trains sufficient time to brake safely if required. This becomes very important as train speeds rise. Without multiple-aspect signals, the stop signals have to be placed very far apart to allow sufficient braking distance, and this

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