Motorists were warned to take extra care after snow covered much of the country, causing transport disruption and the closure of some schools.
Strathclyde Fire and Rescue Service and Tayside Police were among those advising motorists to take care in the hazardous conditions.
A fire service spokesman said: "When driving in snow and ice your stopping distance can be as much as 10 times greater. We want to prevent tragedy striking any community in Strathclyde, so we need people to heed the message: slow down, leave bigger distances and plan ahead."
The warning came after the fire service revealed details of two earlier collisions.
Strathclyde crews responded to a crash between two buses at Glasgow Cross at about 7.40am. They provided emergency trauma care to one woman, who was later taken to hospital for a precautionary check-up.
A separate incident on Greenock's Wellington Street saw firefighters help a woman after her car left the road and hit a building at about 9.25am.
In Fife, police were called to a road accident in an area where weather conditions were described as "very poor". One person died following the crash involving a car and a heavy goods vehicle on the A916 near Craigrothie, at about 11.10am.
Tayside Police urged anyone driving to be prepared for potentially challenging weather conditions, and to take the utmost caution. Police in Dumfries and Galloway said there had been a number of minor bumps and scrapes on roads in the area.
The weather also prompted the emergency closure of at least 24 schools in the Dumfries and Galloway region.
Met Office weather warnings remain in place for Orkney and Shetland, the Highlands, Western Isles, Grampian, Strathclyde, Central, Tayside and Fife, south west Scotland and Lothian and Borders areas.