Exemptions
4. The controls specified in article 3(1) do not apply to:—
(a)a vehicle being used for ambulance, fire brigade or police purposes;
(b)a vehicle being used in the service of a local authority for the purpose of collecting refuse from premises adjacent to a bus lane;
(c)a vehicle being used in connection with the removal of any obstructions to traffic;
(d)a vehicle being used in connection with the maintenance, improvement or reconstruction of a bus lane;
(e)a vehicle entering a bus lane so as to avoid an accident;
(f)a vehicle entering a bus lane to get or give help in consequence of an accident or an emergency or otherwise taking action for public safety;
(g)a vehicle which bears the Royal Mail livery for so long as may be required for the purpose of collection or delivering letters in pursuance of any statutory duty of the Post Office to collect or deliver letters;
(h)a vehicle entering and forthwith leaving a bus lane in order to gain access to or egress from any road adjacent to that bus lane or any vehicular accessway to premises adjacent to the bus lane or crossing over the footway adjacent to the bus lane;
(i)anything done with the permission or at the direction of a police constable in uniform or a traffic warden;
(j)a vehicle being driven so as to enter and forthwith leave the bus lane for the purpose of parking in, or driving from, the designated parking place nearest to the point at which the vehicle enters, or leaves, the bus lane.