During single line working of DL the speed of the first train is ________ kmph A. 25 B. 20 C. 15 D. None of these

The correct answer is: D. None of these.

During single line working of DL, the speed of the first train is governed by the following factors:

• The length of the train
• The gradient of the track
• The weather conditions
• The type of train
• The driver’s experience

In general, the speed of the first train will be lower than the speed of the second train. This is because the first train