Overnight snow caused problems for motorists in north and eastern parts of Wales on Sunday morning.
Police are advising drivers to take extra care
North Wales Police said the snow was particularly heavy around Wrexham, Llandudno and east of Penmaenmawr.
There was an accident involving a lorry and a motorcycle near Chirk.
Snow was also heavy in parts of the Gwent and Dyfed-Powys police force areas but there were no road closures and drivers were urged to take care.
North Wales Police said the A55 was tricky, particularly at Rhuallt Hill, between St Asaph and Holywell, and in Flintshire
Dyfed-Powys Police said main roads were open but conditions on minor roads were particularly bad in the Brecon and north Powys areas, where there were been a number of accidents caused by snow and ice.
Among events affected was a National Festival of Music For Youth concert, due to be held at Cwmbran, which was postponed.
Around 600 young musicians and their parents were expected at County Hall for the event, organised by Gwent Music Support Service.