A Chicago ordinance requires bicycles being ridden at night to have a white head lamp and a rear red reflector. Chicago municipal ordinance 9-52-080 states:
(a) Every bicycle when in use at nighttime shall be equipped with a head lamp which shall emit a white light visible from a minimum distance of 500 feet from the front and with a rear red reflector capable of reflecting the head lamp beams of an approaching motor vehicle back to the operator of such vehicle at distances up to 200 feet or a rear lamp emitting a red light visible from a distance of at least 200 feet from the rear.