Columbia Riding conduct, generally ordinance (§ 14-503)

(a) Seat. A person propelling a cycle shall not ride other than astride a permanent and regular seat attached thereto.

(b) Number of riders. No cycle or motor propelled scooter shall be used to carry more persons at one (1) time than the number for which it is designed and equipped.

(c) Riding to right; riding abreast. Every person operating a cycle or motor propelled scooter at less than the posted speed or slower than the flow of traffic upon a roadway shall ride as near to the right side of the roadway as safe, exercising due care when passing a standing vehicle or one (1) proceeding in the same direction, except when making a left turn, when avoiding hazardous conditions, when the lane is too narrow to share with another vehicle, or when on a one-way street. Bicyclists may ride abreast when not impeding other vehicles.

(d) Speed. No person shall operate a cycle or motor propelled scooter at a speed greater than is reasonable and prudent under conditions then existing.

(e) Age—For major thoroughfares. No person less than nine (9) years of age shall ride a cycle on any major thoroughfare unless accompanied by such person's parents or other responsible adult.

(f) Same—Night, any street. No person less than nine (9) years of age shall ride a cycle at night on any street or thoroughfare unless accompanied by such person's parents or other responsible adult.