The heavy snow that fell across Caerphilly County Borough is expected to turn to ice as temperatures plunge.
The Met Office has warned that below-zero temperatures overnight and into Saturday morning would cause a risk of further travel disruption.
Caerphilly County Borough Council’s highways department has been busy gritting main roads and Arriva Trains Wales has said it expects rail disruption to get better.
Phil Evans, Met Office Director of Government Services, said: “Based on the forecasts and warnings from the Met Office, local councils, emergency services and highways authorities have been working around the clock to minimise the impacts of today’s heavy snow.
“For example, highways authorities have deployed gritters and snow clearing equipment across the road network”
As the snow eases across many areas, ice is expected to become the main hazard over the weekend and yellow warnings have been issued across much of Britain.