If your Labor Day plans include a trip to Yellowstone National Park, you may want to read this.

Park rangers will conduct traffic checkpoints, looking for traffic violations and impaired drivers, in the park over the Labor Day weekend, the park announced in a press release.

The release states that the checkpoints an effort to make roads safer.

“With more than 300 miles of paved roads, Yellowstone’s driving conditions can be extremely challenging due to high traffic volume, stopped vehicles, rapidly-changing weather conditions, wildlife, and even people, on roadways,” the release states.

Local law enforcement agencies will help with the checkpoints. They’ll be looking at things like proper maintenance (tires, brakes, headlights and taillights), usage of seat belts and child seats, as well as drivers with signs of drowsiness and intoxication.

“Park rangers have seen a noticeable increase in impaired driving contacts over the past few years compared to previous years. Drivers charged with ‘driving under the influence’ in Yellowstone face prosecution in federal court and penalties that can include up to six months in jail and a $5,000 fine,” the park reminds people.