Yellowstone National Park law enforcement officers will conduct traffic safety checkpoints in the park this week. Park rangers will be checking all vehicles including visitors’ private vehicles and looking for driver and vehicle safety violations as well as impaired drivers. As such, motorists may see an increased ranger presence on the roads. With more than 450 miles of roads, Yellowstone’s unique driving conditions can be extremely challenging, intensified by high traffic volume, rapidly-changing weather conditions, and the presence visitors and wildlife on roadways. Visitors are reminded that federal law requires all occupants of vehicles to wear seatbelts when driving on all park roads.