3. Subject to the provisions of article 4;
(a)no person causing a vehicle to proceed eastwards in Uxbridge Road on the north of traffic island 1 shall cause that vehicle to turn right into Gunnersbury Avenue or left into Hanger Lane;
(b)no person causing a vehicle to proceed eastwards in Uxbridge Road between traffic islands 1 and 2 shall cause that vehicle to turn left into Hanger Lane or to proceed eastwards across Gunnersbury Avenue;
(c)no person causing a vehicle to proceed westwards in Uxbridge Road between traffic islands 3 and 4, shall cause that vehicle to turn left into Gunnersbury Avenue or to proceed westwards across Gunnersbury Avenue;
(d)no person causing a vehicle to proceed westwards in Uxbridge Road on the south of traffic island 4 shall cause that vehicle to turn right into Hanger Lane.