The Welsh Ministers make these Regulations which 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 slip roads specified in the Schedule to these Regulations.
Mae Gweinidogion Cymru yn gwneud y Rheoliadau hyn sy’n gosod terfyn cyflymder uchaf o 40 milltir yr awr (yn lle’r terfyn cyflymder cyffredinol o 70 milltir yr awr a osodir ar draffyrdd gan Reoliadau Traffig Traffyrdd (Terfyn Cyflymder) 1974 (O.S. 1974/502)) ar y darnau o ffyrdd ymadael traffordd yr M4 a bennir yn yr Atodlen i’r Rheoliadau hyn.
Link:
The M4 Motorway (Eastbound and Westbound Exit Slip Roads at Junction 33 (Capel Llanilltern), Cardiff) (40 MPH Speed Limit) Regulations 2018 / Rheoliadau Traffordd yr M4 (Ffyrdd Ymadael tua’r Dwyrain a thua’r Gorllewin wrth Gyffordd 33 (Capel Llanilltern), Caerdydd) (Terfyn Cyflymder 40 MYA) 2018
Source: Legislation .gov.uk