§ 28-374. Riding on roadways and bicycle paths.
(a)
Every person operating a bicycle or motorized bicycle upon a roadway shall ride as near to the right-hand side of the roadway as practicable, exercising due care when passing a standing vehicle or one proceeding in the same direction.
(b)
Persons riding bicycles or motorized bicycles upon a roadway shall not ride more than two (2) abreast except on paths or parts of roadways set aside for the exclusive use of bicycles.
(c)
Whenever a usable path for bicycles practical for sustained riding for transportation purposes has been officially designated adjacent to a roadway, bicycle riders shall use such path and shall not use the roadway.
State law reference
Similar provisions, RSMo 307.190.