Aaron Kohr - stock.adobe.com

MOAB — Troopers are investigating why a car lost control and rolled near Moab, hospitalizing the driver and two passengers Sunday evening.

The single-car crash happened about 5:30 p.m. Sunday on state Route 191, about 5 miles south of Moab, the Utah Highway Patrol said.

One person was not wearing a seatbelt and was thrown from the northbound car, according to a Facebook post from Grand County Emergency Medical Services.

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The three were transported to Moab Regional Hospital. One in the group was seriously injured and was flown by helicopter to St. Mary's Hospital in Grand Junction, Colorado.

"The cause of the crash and whether all the occupants were properly restrained is under investigation," the UHP said. The crash closed the road in both directions for about an hour Sunday evening.

Troopers on Sunday urged travelers to do safety checks on their cars before heading out on a holiday road trip, to wear seatbelts correctly and limit distraction, and to take regular rest stops to prevent drowsy driving.

— Annie Knox