When driving on a road outside a built-up area during the day and in good weather, must we put on the high-visibility vest before getting out of the vehicle in the event of a breakdown?

A)No, we will only put on the vest at night or in adverse conditions.
B)Yes.Correct
C)Yes, and we must also use it on urban roads.
When the driver leaves the vehicle on an interurban road (outside a built-up area) and occupies the carriageway or the shoulder, they must wear the approved reflective vest, so the vest must be carried inside the passenger compartment so that it can be put on before getting out.