There's reduced visibility and surface water because of rain on the M4 between J30 A4232 (Cardiff Gate) and J49 A48 / A483 (Pont Abraham Roundabout).
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In the second of our special series Welsh education: Making the grade? we visited Bishop Hedley High in Merthyr Tydfil.
More wintry showers will continue overnight and a yellow warning of ice has been issued for central and eastern parts.
Swansea Dry Dock says it's missed out on a number of contracts to dismantle warships because they've gone elsewhere.