Roads: M4 Motorway
There's fog and reduced visibility on the M4 between J49 A48 / A483 (Pont Abraham Roundabout) and J22 M49.
Live updates
Roads: M4, Pencoed - Llandarcy
The fog's cleared on the M4 between J35 A473 (Pencoed) and J43 A465 (Llandarcy)
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Roads: A465, Heads of the Valleys Road
The fog's cleared on the A465 Heads Of The Valleys Road between A4060 / High Street (Dowlais Roundabout, Merthyr Tydfil) and A469 (Rhymney Interchange, Rhymney).
Roads A55, Flintshire
There's fog and reduced visibility on the A55 between J31 A5026 / A5151 / B5122 (Caerwys) and J33 A5119 Northop Road.
Weather Warning: Fog
The Met Office has issued a yellow "Be Aware" warning for fog across Southeast Wales:
The public should be aware of the risk of poor driving conditions due to significantly reduced visibility.
Roads: A55, M4
There's patchy fog on the A55 in Flintshire and Conwy and on the M4 around Bridgend, Newport and the Severn Crossings
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ROADS: M4, M48
The fog's cleared on the M4 and M48.
Roads: A55, M4, M48
There's patchy fog on the A55, the M4 and other routes, reducing visibility.