These actions are illegal in the park:
Possessing a firearm or weapon, including state-permitted;
Concealed weapons, except: Unloaded firearms may be transported in a vehicle when rendered inoperable or are packed, cased, or stored in a manner that prevents ready use;
Speeding (radar enforced)—except for a portion of U;S; 191, all roads within the park are posted at 45 mph or slower;
Driving while intoxicated (open container law enforced);
Leaving detachable side mirrors attached when not pulling trailers;
Traveling off-road by vehicle or bicycle; (bicycling rules and riding locations are listed in a free brochure at visitor center.);
Improperly storing food;
Fishing, boating, or using a float tube without a permit Violating camping regulations & rules
Camping outside of designated camping areas
Camping in the backcountry without a permit;
Driving or riding in a vehicle without your seatbelt fastened. Each vehicle occupant must have a safety belt or child restraint system fastened when the vehicle is in motion;
Having pets off leash or on trails and boardwalks; Pets are prohibited on all trails, in the backcountry, and in hydrothermal basins; Where allowed, pets must be leashed and must remain within 100 feet (30 m) of a road or parking area; Do not leave a pet unattended or tied to an object; Boarding facilities are available outside the park;
Littering;
Swimming in hydrothermal pools
Diving or jumping off cliffs in the Firehole swim area on Firehole Canyon Drive;
Traveling off boardwalks or designated trails in hydrothermal areas;
Removing or possessing natural (antlers, rocks, vegetation, etc;) or cultural (arrowheads, etc;) features;
Spotlighting (viewing with artificial light) elk, deer, or other animals;
Calling in elk by imitating their calls or using buglers;
Imitating wolf howls and using electronic equipment capable of tracking wildlife; and willfully remaining near or approaching wildlife, including birds, within any distance that disturbs or displaces the animal;