1. No person shall drive a motor vehicle at such a slow speed as to impede or block the normal and reasonable movement of traffic, except when reduced speed is necessary for safe operation or in compliance with law. Peace officers may enforce the provisions of this section by directions to drivers, and in the event of apparent willful disobedience to this provision and refusal to comply with direction of an officer in accordance herewith, the continued slow operation by a driver is a misdemeanor.

2. No vehicle shall be operated at a speed of less than forty miles per hour on any highway which is part of the interstate system of highways, unless:

Attorney's Note

Under the Missouri Laws, punishments for crimes depend on the classification. In the case of this section:
ClassPrisonFine
Class C misdemeanorup to 15 daysup to $750
For details, see Mo. Rev. Stat.§ 558.011

Terms Used In Missouri Laws 304.011

  • Department: the state transportation department. See Missouri Laws 304.001
  • implements of husbandry: means all self-propelled machinery operated at speeds of less than thirty miles per hour, specifically designed for, or especially adapted to be capable of, incidental over-the-road and primary offroad usage and used exclusively for the application of commercial plant food materials or agricultural chemicals, and not specifically designed or intended for transportation of such chemicals and materials. See Missouri Laws 304.170
  • Person: any natural person, corporation, or other legal entity. See Missouri Laws 304.001
  • State: when applied to any of the United States, includes the District of Columbia and the territories, and the words "United States" includes such district and territories. See Missouri Laws 1.020

(1) A slower speed is required for the safe operation of the vehicle because of weather or other special conditions; or

(2) Agricultural implements, self-propelled hay-hauling equipment, implements of husbandry and vehicles transporting such vehicles or equipment may be operated occasionally on interstate highways for short distances at a speed of less than forty miles per hour if such vehicle or equipment is operated pursuant to a special permit issued by the chief engineer of the state department of transportation pursuant to section 304.200 and the regulations established pursuant to such section.

3. Any person who violates subsection 2 of this section is guilty of a class C misdemeanor.