4.__Unlawfully operating ATV on snowmobile trail.__Operating an ATV on a snowmobile trail financed in whole or in part with funds from the Snowmobile Trail Fund is governed by section 13107.

A person who violates this subsection commits a civil violation for which a forfeiture of not less than $100 nor more than $500 may be adjudged.

5.__Unlawfully operating ATV on private road.__A person may not operate an ATV upon a private road after having been forbidden to do so by the owner's agent or a municipal official, either personally or by appropriate notices posted conspicuously on that road.

A person who violates this subsection commits a civil violation for which a forfeiture of not less than $100 nor more than $500 may be adjudged.

6.__Operating ATV on public way.__Except as provided in this subsection, a person may not operate an ATV, other than an ATV registered with the Secretary of State under Title 29-A, on any portion of a public way maintained or used for the operation of conventional motor vehicles or on the sidewalks of any public way.

A.__A properly registered ATV may be operated on a public way only the distance necessary, but in no case to exceed 300 yards, on the extreme right of the traveled way for the purpose of crossing, as directly as possible, a public way, sidewalk or culvert.

B.__A properly registered ATV may be operated on a public way only the distance necessary, but in no case to exceed 500 yards, on the extreme right of the traveled way for the sole purpose of crossing, as directly as possible, a bridge, overpass or underpass, as long as that operation can be made in safety and that it does not interfere with traffic approaching from either direction on the public way.

C.__An ATV may be operated on any portion of a public way when the public way has been closed in accordance with Title 23, section 2953.

D.__An ATV may be operated on a public way that is not maintained or used for the operation of conventional motor