Should you give way to an ambulance that is using its light signal but not its acoustic signal?
A)No, because it is not travelling on an urgent service.
B)No, because if it is not using the acoustic signal it is because it has enough space to pass.
C)Yes, because it is warning that it is travelling on an urgent service.Correct
Yes, it is mandatory to give way. The light signal (V-1) is sufficient to indicate that a vehicle is travelling on an urgent service and has priority. The acoustic signal may be omitted to avoid noise pollution, especially at night, without this nullifying its priority status.