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Railways Signalling Slip Siding & Catch Siding
Railways Signalling Slip Siding & Catch Siding:- On Indian Railways, for all gauges, the maximum gradient permitted is 1:400, where as1:1200 is usually allowed within the station yard. No station yard should be steeper than 1:260, except due to geographic conditions. Where such gradient cannot be avoided within the station yard, condonation of CRS is to be obtained for providing SLIP SIDING. Slip siding will prevent vehicles from entering the block section.
Where gradients are steeper than 1:80 falling towards the station, to prevent vehicles from entering the station section from the block section. This arrangement is known as „CATCH SIDING‟ Catch siding will prevent vehicles entry into the block section.
Slip sidings and „Catch sidings‟ points must be interlocked with block instruments and
these sidings should not be used for shunting or stabling purposes.