Section 811.580 - Parking vehicle on state highway for vending purposes; penalty(1) A driver commits the offense of unlawful parking for vending purposes if the person parks or leaves standing a vehicle on a right of way of a state highway for the purpose of advertising, selling or offering merchandise for sale except pursuant to written agreement with the Department of Transportation.(2) The offense described in this section, unlawful parking for vending purposes is a Class D traffic violation.