The first significant snowfalls of 2007 have caused transport problems for motorists across Scotland.
The central belt was the worst affected by snow showers, with dozens of schools closed and long delays for motorists.
Some flights to and from Scotland's airports have been delayed or cancelled due to high winds in England and Wales.
Police have warned drivers to take care as problems on higher ground has led to rural roads being affected by ice and melting snow.
Near-freezing temperatures added to the danger for motorists, combined with sleet and rain.
In Fife, 37 schools were closed due to the weather.
The northbound M90 was shut due to two jack-knifed lorries blocking the carriageway, leading to delays of several hours.
Traffic is expected to remain slow in single lanes in both directions near the Forth Bridge.
The A92 Dunfermline to Dundee road also suffered problems caused by snow.
Central Scotland Police said several cars had become stuck on the A809 near Killearn early on Thursday due to snow.
Dougie Arthur took this picture at 1000 GMT on Milngavie Road, Bearsden
A snowplough and gritter were summoned and drivers were advised that the road could remain closed for some time.
Several inches of snow on the A9 between Dalwhinnie and Blair Atholl caused the temporary closure of snow gates, halting traffic between the two towns.
At Glasgow Airport, the snow and poor visibility increased disruption and led to14 flight cancellations.
There were 15 flights cancelled from Edinburgh and two from Aberdeen.
BAA Scotland advised passengers to check with airlines
The weather caused schools to close in Perth and Kinross, the Stirling area, Falkirk, West Dunbartonshire and Dumfries and Galloway.
Tayside Police urged motorists not to make unnecessary journeys in the snow following a spate of road accidents in Angus and Perthshire, although nobody was injured.
It was fun for some - as Amy in Denny demonstrates
In Grampian, police reported the B974 Banchory to Fettercairn road over the Cairn 0' Mount had been closed to traffic because of icy conditions.
The road was badly affected by ice, with a covering of snow, and the snow gates on both ends were closed.
A Grampian Police spokesman said conditions were so treacherous that a number of drivers from the east side had been turning back.
In Dumfries and Galloway, motorists were warned of blizzard conditions affecting the region in the early morning but police subsequently said that driving conditions had improved.
The Met Office has released severe weather warnings across much of the UK, advising that damaging gusts of wind could cause widespread travel disruption.
Southern Scotland is due to experience the strongest winds, with gusts of up to 60mph expected in Dumfries and Galloway later on Thursday.
Last week Scotland was battered by two days of storm-force winds gusting up to 80mph.