You may want to print this page and carry it with you in case someone tries to tell you otherwise.
Rights and duties of bicycle and motorized bicycle riders.
307.188 Every person riding a bicycle or motorized bicycle upon a street or highway shall be granted all of the rights and shall be subject to all of the duties applicable to the driver of a vehicle as provided by chapter 304, RSMo, except as to special regulations in sections 307.180 to 307.193 and except as to those provisions of chapter 304, RSMo, which by their nature can have no application.
Riding to right, required for bicycles and motorized bicycles.
307.190 Every person operating a bicycle or motorized bicycle at less than the posted speed or slower than the flow of traffic upon a street or highway shall ride as near to the right side of the roadway as safe, exercising due care when passing a standing vehicle or one proceeding in the same direction,
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.
Riding bicycle on sidewalks, limitations--motorized bicycles prohibited.
1. No person shall ride a bicycle upon a sidewalk within a business district.
2. Whenever any person is riding a bicycle upon a sidewalk, such person shall yield the right-of-way to any pedestrian and shall give audible signal before overtaking and passing such pedestrian.
3. No person shall ride a motorized bicycle upon a sidewalk.
Riding bicycles, sleds, roller skates, by attaching to another vehicle, prohibited.
300.350 No person riding upon any bicycle, motorized bicycle, coaster, roller skates, sled or toyvehicle shall attach the same or himself to any vehicle upon a roadway.
Bicycle and motorized bicycle, defined
307.180 As used in sections 307.180 to 307.193:
1. The word "bicycle" shall mean every vehicle propelled solely by human power upon which any person may ride, having two tandem wheels, except scooters and similar devices;
2. The term "motorized bicycle" shall mean any two- or three-wheeled device having an automatic transmission and a motor with a cylinder capacity of not more than fifty cubic centimeters, which produces less than three gross brake horsepower, and is capable of propelling the device at a maximum speed of not more than thirty miles per hour on level ground. A motorized bicycle shall be considered a motor vehicle for purposes of any homeowners' or renters' insurance policy.
307.183 Every bicycle and motorized bicycle shall be equipped with a brake or brakes which will enable its driver to stop the bicycle or motorized bicycle within twenty-five feet from a speed of ten miles per hour on dry, level, clean pavement.
Lights and reflectors, when required--standards to be met
307.185 Every bicycle and motorized bicycle when in use on a street or highway during the period from one-half hour after sunset to one-half hour before sunrise shall be equipped with the following:
1. A front-facing lamp on the front or carried by the rider which shall emit a white light visible at night under normal atmospheric conditions on a straight, level, unlighted roadway at five hundred feet;
2. A rear-facing red reflector, at least two square inches in reflective surface area, or a rear-facing red lamp, on the rear which shall be visible at night under normal atmospheric conditions on a straight, level, unlighted roadway when viewed by a vehicle driver under the lower beams of vehicle headlights at six hundred feet;
3. Reflective material and/or lights on any part of the bicyclist's pedals, crank arms, shoes or lower leg, visible from the front and the rear at night under normal atmospheric conditions on a straight, level, unlighted roadway when viewed by a vehicle driver under the lawful lower beams of vehicle headlights at two hundred feet; and
4. Reflective material and/or lights visible on each side of the bicycle or bicyclist and visible at night under normal atmospheric conditions on a straight, level, unlighted roadway when viewed by a vehicle driver under the lawful lower beams of vehicle headlights at three hundred feet. The provisions of this subdivision shall not apply to motorized bicycles which comply with National Highway Traffic and Safety Administration regulations relating to reflectors on motorized bicycles.
Penalty for violation
307.193 Any person seventeen years of age or older who violates any provision of sections 307.180 to 307.193 is guilty of an infraction and, upon conviction thereof, shall be punished by a fine of not less than five dollars nor more than twenty-five dollars. Such an infraction does not constitute a crime and conviction shall not give rise to any disability or legal disadvantage based on conviction of a criminal offense. If any person under seventeen years of age violates any provision of sections 307.180 to 307.193 in the presence of a peace officer possessing the duty and power of arrest for violation of the general criminal laws of the state or for violation of ordinances of counties or municipalities of the state, said officer may impound the bicycle or motorized bicycle involved for a period not to exceed five days upon issuance of a receipt to the child riding it or to its owner.
Illinois statutes <http://www.dps.uiuc.edu/TrafficSafety/illinois.htm> say the same thing!
300.340 Opening and closing vehicle doors.
No person shall open the door of a motor vehicle on the side available to moving traffic unless and until it is reasonably safe to do so, nor shall any person leave a door open on the side of a motor vehicle available to moving traffic for a period of time longer than necessary to load or unload passengers.