BICYCLE LIGHTS LAW REQUIRMENTS IN Louisiana
In US the bike lights die required by Law if you reading in low light conditions, The light can be attached to either the bike or to the cyclist but must be visible at least 500 feet to the front of the bicyde, so be careful how you position the light. Additional lighting must be consistent with the law specifying required lights and reflectors, so a rear light must be red.
§329.1. Bicycles; front lamps; rear lamps; side and rear reflectors
A. Any bicycle when in use at the times specified in R.S. 32:301 shall be equipped with the following:
(1) A lamp mounted on the front that shall emit a white light visible from a distance of at least five hundred feet to the front. A generator-powered lamp that emits light only when the bicycle is moving may be used to meet this requirement.
(2) A lamp mounted on the rear that shall emit either a flashing or steady red light visible from a distance of five hundred feet to the rear.
(3) A red reflector mounted on the rear and a reflector on each side facing outward at a right angle to the bicycle frame that shall be visible from all distances from one hundred feet to six hundred feet to the rear when directly in front of lawful lower beams of head lamps on a motor vehicle.
B. A bicycle or its operator may be equipped with lights or reflectors in addition to those required by Subsection A of this Section, except that red lamps and red reflectors shall not be used on the front of the bicycle and white lamps and white reflectors shall not be used on the rear of the bicycle.
C. A lamp or lamps worn by the operator of a bicycle shall comply with the requirements of Subsection A of this Section, if the lamp or lamps can be seen at the distances specified.
D. No person shall operate any bicycle on a state highway, parish road, or city street at a time specified in R.S. 32:301 unless such bicycle is equipped with lamps and reflectors to comply with Subsection A of this Section. Whoever violates this Section shall be subject to a fine of not more than twenty-five dollars which shall include all costs of court.
E. No retailer, distributor, wholesaler, or manufacturer in this state shall sell or offer for sale any bicycle unless such bicycle is equipped with lamps and reflectors as required by Subsection A of this Section.
F. This Section shall not apply to operators of bicycles or bicycles while the operator or bicycle is engaged in sanctioned competition races or to bicycles while utilized by peace officers in furtherance of their official duties.