This vehicle has broken down and is travelling very slowly with the hazard lights on. Is this correct?

A)No, because hazard lights are only switched on when the vehicle is stationary.
B)No, because it is prohibited to use them on urban roads.
C)Yes, because it has broken down.Correct
The hazard light or signal shall be used to signal and warn of the danger temporarily posed by a vehicle affected by a breakdown, accident, load spillage, or any other emergency on urban and interurban roads, both day and night, and whether the vehicle is stationary or in motion.