Railway Engineering
The slipping of driving wheels of locomotives on the rail surface causes

corrugation of rails
scabbing of rails
hogging of rails
wheel burns

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Railway Engineering
A triangle is used for

Changing the direction of engine
Preventing the vehicles from running off the track
Separating all the sidings and shunting lines from main lines
Transferring wagons to and from parallel tracks without shunting

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Railway Engineering
The treadle bar is provided

at right angle to the rail
near and parallel to inner side of one of the rails
in the middle of the track a little in front of the toes of the tongue rail
near and parallel to inner side of both the rails

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