The Order will temporarily impose temporary 30 mph, 40 mph and/or 50 mph speed limits on lengths of the M4 motorway between Junctions 34 and 49 when works are needed at a particular site.
Documents
The M4 motorway (junction 34 (Llantrisant), Rhondda Cynon Taf to junction 49 (Pont Abraham), Carmarthenshire) (temporary speed limits) Order 2025 , file type: PDF, file size: 170 KB
PDF
170 KB
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The M4 motorway (junction 34 (Llantrisant), Rhondda Cynon Taf to junction 49 (Pont Abraham), Carmarthenshire) (temporary speed limits) Order 2025: public notice , file type: PDF, file size: 116 KB
PDF
116 KB
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Details
This Temporary Order comes into force on 1 July 2025.