Wintry conditions return to Scotland's roads
Snow and ice affected parts of Scotland during morning rush hour - with drivers complaining of ungritted roads.
A number of accidents were reported across the country.
The Met Office had issued a yellow "be aware" warning and say that further ice and snow is forecast in the next few days, with north east, east and south east of Scotland worst affected.
Transport Scotland said more than 130 gritters had been out on trunk roads overnight.
A Transport Scotland spokesman said: "The sporadic heavy snowfall combined with morning peak traffic volumes, a number of incidents and breakdowns at critical locations caused more delays than we would normally anticipate for this type of weather event."
The spokesman added: "With more severe weather warnings in place, we would ask drivers to continue to play their part by planning their journeys in advance, adapting their driving behaviour to match weather conditions and considering public transport alternatives where available."
Among the worst affected areas was the M74. In South Lanarkshire, a driver had been cut from his lorry after it was involved in a collision with two other heavy goods vehicles,
Emergency services were called to the scene, between J12 and J13, north of Abington services, at about 07:50.
The driver's lorry was lying on its side across all three lanes of the northbound carriageway.
He was cut free and flown to Glasgow's Southern General Hospital to be treated for back and facial injuries.
The M74 was also closed southbound at Junction 9 Draffan to Juntion 10 Wellburn by an accident.
Police reported that the main route connecting Scotland and England was down to one lane from about Hamilton to Lesmahgow because of snow.
On the M8, a breakdown was disrupting the flow of traffic eastbound at Hermiston Gait, while traffic was at a near standstill near the Showcase Cinema at Bargeddie.
The westbound carriageway was partially blocked by an accident at Livingston, while there were delays of an hour between the Gorbals and Harthill.
On the M9 between the Bo'ness and Philipstoun junctions, traffic was crawling at speeds of 5mph in both lanes in the direction of Edinburgh.
There were also reports of poor conditions on the A7 south of Edinburgh in the direction of Selkirk and also on the road to Hawick.
Traffic was stop-start on parts of the A720 Edinburgh city-bypass, while there were reports of poor conditions on many roads in Fife.
A 30mph speed restriction, because of the risk of skidding, on the Forth Road Bridge was causing southbound delays of at least 30 minutes.
At Stirling, the Carron Bridge was partially blocked because of an accident, while an overturned car was disrupting traffic on the B818 Takmadoon Road between Denny and Fintry.
Another overturned car closed a lane on the A90 northbound between the B953 at Inchture and Main Street, Longforgan.
Meanwhile, roadworks were to blame for causing long delays on the Kessock Bridge at Inverness.
The Met Office yellow warning is for ice from 17:00 on Monday evening until 10:00 on Tuesday covering north eastern, eastern and south eastern areas.
A further snow warning has been issued for north and north eastern areas between 18:00 on Tuesday until 09:00 on Thursday.