The M4 Motorway (Hillingdon and Hounslow) (Speed Limits) Regulations 1998
These Regulations revoke the Motorways Traffic (M4) (Speed Limit) Regulations 1971 and reduce the speed limits for motor vehicles on certain lengths of the M4 Motorway and its slip roads. Those lengths of the M4 Motorway which are reduced to a speed limit of 40 miles per hour are set out in Part II of the Schedule. Those lengths of the M4 Motorway which are reduced to a speed limit of 50 miles per hour are set out in Part III of the Schedule. Part I of the Schedule contains definitions.