New weather warnings are predicting fresh snow and ice for much of Scotland and Northern Ireland.
Forecasters are warning of ice on untreated surfaces and frequent blustery showers of rain, sleet, snow and hail on Wednesday.
The Met Office has issued yellow "be prepared" warnings covering northern, western and southern Scotland and Northern Ireland, which are valid from 3am until 6pm on Wednesday.
It said 2-5cm of snow is expected to accumulate in places above 200m, while some snow is also possible to low levels at times.
The warning states: "Some roads and railways are likely to be affected by snow with longer journey times by road, bus and train services.
"Some injuries from slips and falls on icy surfaces are also possible."
Scotland's Transport Minister Humza Yousaf urged people to plan ahead if travelling.
He tweeted: "This is likely to affect morning & evening peak travel. As always follow @trafficscotland for updates & leave extra time for journeys."