4. The controls specified in article 3(1) do not apply in respect of a person causing a vehicle to be parked at the edge of the carriageway on a length of road specified in an item in column (2) of the table in schedule 3A during the hours specified in column (3) in that item for a period not exceeding the period specified in column (4) in that item, provided that not less than the period specified in column (5) in that item has elapsed since the vehicle was last parked on any part of the same length of road.