A38 hill severe weather plan in force after snowfall
A severe weather response plan was in place on one of Devon's main trunk routes after snowfall.
The plan was in place for the A38 at Haldon Hill, near Exeter, overnight but was stood down at about 0900 GMT.
Conditions were monitored but the road was kept open to traffic, officials said.
Light snow was also reported on Dartmoor and in north Devon. Snow was expected generally across high ground on Monday, the Met Office said.
The plan, involving Devon County Council and the emergency services, is in place to try to prevent the chaos caused by snow in 2009 and 2010.
In February 2009 and January 2010, thousands of motorists were stranded for hours in freezing conditions on two hills, Haldon and Telegraph Hill on the A380.
The plan includes the use of "spotters" at the top of the hills to give early warning of snowfall.
Advanced snow ploughs can be deployed to keep at least one lane up and down the hills clear.
Preparations are made to create a break in the central reservation barrier which would allow vehicles trapped at the top of the hill to turn around.
The plan also includes the use of rolling road blocks on the M5 to control traffic, and the use of Chudleigh's town hall as a designated rest centre.
The council has winter travel advice on its website.