The M4 Motorway (Junction 24, Coldra Interchange, Newport) (40 MPH Speed Limit) Regulations 2010
These Regulations impose a maximum speed limit of 40 miles per hour (instead of the general 70 miles per hour speed limit imposed on motorways by the Motorways Traffic (Speed Limit) Regulations 1974 (S.I.1974/502)) on the lengths of the M4 motorway specified in these Regulations.