Fig. 35.
Fig. 36.
On all large pieces of work where the main line traffic is heavy it is important that the first side track from A to B, [Fig. 32], shall be of sufficient length (usually about 700 ft.) to hold the engine and a full string of cars to avoid going on the main track when switching loads to C, and obtaining empties from D. If there is an embankment from A to B it can be widened with material taken from the cut, either by wagon or cars.
Fig. 34.