SNOWMOBILING IN MICHIGAN Slow Down, Don't Drink and Live to Enjoy Michigan's Winter Wonderland. The State of Michigan, including every available branch of law enforcement, thoroughly enforces all snowmobile laws. Fines are substantial. RESTRICTIONS ON YOUTHFUL OPERATORS A person under the age of 12, may not: (a) operate a snowmobile without the direct supervision of the parent or guardian except on property owned or controlled by the parent (b) cross a highway or street. A person who is a least 12 but less than 17 years of age may operate a snowmobile under direct supervision of a person 21 years of age or older or have in their immediate possession a valid snowmobile safety certificate. A person who is at least 12 but less than 17 years of age may not cross a highway or a street without having a valid snowmobile safety certificate in their immediate possession. PROHIBITED OPERATION OF A SNOWMOBILE IT IS ILLEGAL TO OPERATE A SNOWMOBILE: While under the influence of alcohol, a controlled substance or a combination of the two. At a rate of speed greater than is reasonable for existing conditions. On the frozen surface of public waters within 100 feet of a person, including a skater, not in or upon a snowmobile or within 100 feet of a fishing shanty or shelter except at a speed required to maintain forward movement of the snowmobile or on an area which has been cleared for ice skating, unless the area is necessary for gaining access to the public water. Within 100 feet of an occupied dwelling between 12 midnight and 6 a.m., at a speed greater than the minimum required to maintain forward movement of the snowmobile. In or upon the land of another without consent of the owner or his agent, when required by the recreational trespass act. In an area open to public hunting during the firearm deer season from 7 a.m. to 11 a.m. and from 2 p.m. to 5 p.m. While transporting on the snowmobile a bow unless unstrung or a firearm unless unloaded and securely encased or equipped with a trigger locking device. On or across a cemetery or burial ground, an airport, a public or private parking lot, a public highway or street, within 100 feet of a slide, ski, or skating area, a railroad or a railroad right-of-way. To chase, pursue, worry, or kill any wild bird or animal.