The correct answer is: A. 03 long
When the train has not cleared the fouling marks, the driver should give 3 long whistles. This is to warn the workers on the track that the train is approaching and to give them time to clear the area.
A fouling mark is a white line painted on the track to indicate the safe working area. The driver should not pass the fouling mark until the train has come to a complete stop.
If the driver does not give the correct number of whistles, they could be fined or even lose their job. It is important to follow the rules and regulations when operating a train to ensure the safety of everyone involved.
Here is a brief explanation of each option:
- Option A: 03 long whistles. This is the correct answer. The driver should give 3 long whistles when the train has not cleared the fouling marks.
- Option B: 02 long whistles. This is incorrect. The driver should give 3 long whistles, not 2 long whistles.
- Option C: 01 long whistle. This is incorrect. The driver should give 3 long whistles, not 1 long whistle.
- Option D: None of these. This is incorrect. The driver should give 3 long whistles, not none of these.