Col. Matthew Packard, chief of the state patrol, says six fatal crashes occurred between about 9:30 p.m. Saturday and 9:30 a.m. Sunday involving either excessive speed or alcohol.

The accidents included a pedestrian hit while standing on the road and a handicap-accessible van that resulted in the death of a man in a wheelchair inside the van.

Officials say more than 500 people have been killed on Colorado roadways so far this year.