Drivers have been warned to proceed with “extreme caution” in continuing winter conditions.
The Met Office amber warning of snow and ice has expired, and advice from Police Scotland has edged down to the “high risk” level.
Police said there is still the likelihood of disruption and delays.
A number of vehicles- including jacknifed lorries – got stuck on the A75 Euroroute in the Dumfries and Gatehouse of Fleet area last night.
The road was fully reopened by morning.
Drivers in Scotland and northern England had been urged not to travel, as snow storms hit parts of the UK for a third day.
Last night’s “do not travel” warning is believed to have been the first issued since the high winds of January 2013.
Yellow warnings for snow and ice remain in place for parts of Scotland, Northern Ireland and northern England.
Supt Calum Glenny said: “Despite some difficult weather conditions in the Dumfries and Galloway area which caused some disruption, the weather was not as severe as was first forecast.
“Thankfully, a significant number of motorists heeded the warnings which had been issued to avoid travelling on the roads and I’d like to thank them for doing so.
“When we take decisions to upgrade travel warnings, we do so with careful consideration and public safety is paramount at all times.”
He added: “Please continue to drive with caution.”
Scottish Borders Council said no schools would open in its area on Thursday, with 15,000 pupils missing lessons.
A total of 26 schools were also shut in Dumfries and Galloway on Wednesday, affecting 4,000 students.
In the Highland Council area, nearly 150 schools and nurseries were shut or partially closed, affecting 15,000 pupils.
Nearly 30 schools and nurseries were closed in South Lanarkshire and there are also a number of schools shut in East Ayrshire, Stirling, Falkirk and Perth and Kinross.
A guide to travel warnings
Travel conditions are graded at four levels by police and transport officials depending on the severity of the weather.
- Level 1: Normal operations – no severe weather.
- Level 2: Travel with caution – police advise people that conditions for road travel may be hazardous.
- Level 3: High risk of disruption for road journeys – police advise that there is a high risk of disruption for road journeys. Travellers are likely to experience significant delays.
- Level 4: Avoid travelling on the roads – journeys should be avoided. Severe delays expected.
BBC contributed to this report.