Mo. Rev. Stat. § 304.034: Municipalities may regulate golf cart and motorized wheelchair usage on streets and highways.

1. Notwithstanding any other law to the contrary, the governing body of any municipality may by resolution or ordinance allow persons to operate golf carts or motorized wheelchairs upon any street or highway under the governing body's jurisdiction. A golf cart or motorized wheelchair shall not be operated at any time on any state or federal highway, but may be operated upon such highway in order to cross a portion of the state highway system which intersects a municipal street. No golf cart or motorized wheelchair shall cross any highway at an intersection where the highway being crossed has a posted speed limit of more than forty-five miles per hour.

2. Golf carts operated on city streets shall be equipped with adequate brakes and shall meet any other safety requirements imposed by the governing body. Golf carts are not subject to the registration provisions of chapter 301.

3. As used in this section, a "golf cart" means a motor vehicle that is designed and manufactured for operation on a golf course for sporting or recreational purposes and that is not capable of exceeding speeds of twenty miles per hour.