State police are warning drivers of black ice this morning.
Authorities say accumulating ice and slush has made roads dangerous in the Franklin County area and that black ice is a danger in Chittenden County.
State police say numerous cars skidded off Interstate 89 in Montpelier because of icy roads. Several tractor trailers were unable to move because of road conditions. No injuries were reported.
The Vermont Agency of Transportation is reporting difficult winter driving conditions for the western side of Vermont, and fair driving conditions on the eastern side of the state.