BENSON, Vt. (AP) - Authorities say a snowmobile and a tractor-trailer collided on a state highway in western Vermont, killing the driver of the snowmobile.

Police said the accident happened around 3:30 p.m. Sunday on state route 22A near Trinity Farm in Benson. The passenger on the snowmobile was transported to Rutland Regional Medical Center, but the extent of their injuries isn't yet known.

The crash remains under investigation.