Transitory operation on shoulder, inslope, or roadway

A person may operate a recreational vehicle upon the shoulder, inslope, or roadway of a state highway only when an obstruction prevents the safe operation of the recreational vehicle upon the ditch bottom and the backslope. The operation on the shoulder, inslope, or roadway shall be for the sole purpose of avoiding the obstruction and upon passing the obstruction, the operator shall return the recreational vehicle to the ditch bottom of backslope.