VERNAL — A Montana man was killed in a motorcycle accident in The Switchbacks area near Vernal on Saturday.

David P. Hellrigel, 49, of Bozeman, was on state Route 191 just after noon, when he failed to make a turn and crashed into the guardrail, said Utah Department of Public Safety spokesman Joe Dougherty.

Hellrigle was thrown against the guardrail and killed, despite having a helmet on. His motorcycle continued for another quarter-mile before stopping, Dougherty said.

Speed did not appear to be a factor, he said. The investigation into accident was expected to continue.