Yellowstone National Park Tourism File

Tourists take photos and cars drive through the Roosevelt Arch at sunset in Gardiner in this July 2017.

Visitors to Yellowstone National Park will see an increase in law enforcement on roads this week as rangers run safety checkpoints throughout the park.

Park officers are looking for impaired drivers and safety hazards.

About 450 miles of road wind through the park and cover a variety of terrain. Driving in the park is challenging during peak season due to increased traffic, changing weather and wildlife on the road.

Yellowstone National Park spokesperson Linda Veress said there are a high number of accidents in the park caused by impaired driving, but she could not provide an exact number.

At the checkpoints, rangers will look for drivers under the influence of drugs or alcohol, may examine vehicles and will look for the proper use of seat belts, Veress said.

“There might be some delays. Be patient, this is for everyone’s safety,” Veress said.

Veress said there isn’t one reason for the checkpoints this week. Rangers conduct them periodically.

An accident in Glacier National Park Monday illustrated the need for safe driving in parks. A car was stopped on the Going-to-the-Sun road to watch a nearby bear, causing another car to swerve and drive down a 40-foot embankment.

Three passengers were injured, but were in stable condition and taken to a hospital in Kalispell.

Visitors can find up-to-date road conditions on the park website, at visitor centers or by calling (307) 344-2117. People can also text “82190” to 888-777 to receive road alerts.

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