Colorado Code § 42-4-221

Bicycle, electric scooter, and personal mobility device equipment
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(1) No
other provision of this part 2 and no provision of part 3 of this article 4 applies to a bicycle,
electrical assisted bicycle, electric scooter, or EPAMD or to equipment for use on a bicycle,
electrical assisted bicycle, electric scooter, or EPAMD except those provisions in this article 4
made specifically applicable to such a vehicle.
(2) Every bicycle, electrical assisted bicycle, electric scooter, or EPAMD in use at the
times described in section 42-4-204 shall be equipped with a lamp on the front emitting a white
light visible from a distance of at least five hundred feet to the front.
(3) Every bicycle, electrical assisted bicycle, electric scooter, or EPAMD shall be
equipped with a red reflector of a type approved by the department, which shall be visible for six
hundred feet to the rear when directly in front of lawful lower beams of head lamps on a motor
vehicle.
(4) Every bicycle, electrical assisted bicycle, electric scooter, or EPAMD when in use at
the times described in section 42-4-204 shall be equipped with reflective material of sufficient
size and reflectivity to be visible from both sides for six hundred feet when directly in front of
lawful lower beams of head lamps on a motor vehicle or, in lieu of such reflective material, with
a lighted lamp visible from both sides from a distance of at least five hundred feet.
(5) A bicycle, electrical assisted bicycle, electric scooter, or EPAMD or its rider may be
equipped with lights or reflectors in addition to those required by subsections (2) to (4) of this
section.
(6) A bicycle, electrical assisted bicycle, or electric scooter shall not be equipped with,
nor shall any person use upon a bicycle, electrical assisted bicycle, or electric scooter, any siren
or whistle.
(7) Every bicycle, electrical assisted bicycle, or electric scooter shall be equipped with a
brake or brakes that will enable its rider to stop the bicycle, electrical assisted bicycle, or electric
scooter within twenty-five feet from a speed of ten miles per hour on dry, level, clean pavement.
(8) A person engaged in the business of selling bicycles, electrical assisted bicycles, or
electric scooters at retail shall not sell any bicycle, electrical assisted bicycle, or electric scooter
unless the bicycle, electrical assisted bicycle, or electric scooter has an identifying number
permanently stamped or cast on its frame.
(8.5) A local government may regulate the operation of an electric scooter in a manner
that is no more restrictive than the manner in which the local government may regulate the
operation of a class 1 electrical assisted bicycle.
(9) (a) On or after January 1, 2018, every manufacturer or distributor of new electrical
assisted bicycles intended for sale or distribution in this state shall permanently affix to each
electrical assisted bicycle, in a prominent location, a label that contains the classification
number, top assisted speed, and motor wattage of the electrical assisted bicycle. The label must
be printed in the arial font in at least nine-point type.
(b) A person shall not knowingly modify an electrical assisted bicycle so as to change
the speed capability or motor engagement of the electrical assisted bicycle without also
appropriately replacing, or causing to be replaced, the label indicating the classification required
by subsection (9)(a) of this section.
(10) (a) An electrical assisted bicycle must comply with the equipment and
manufacturing requirements for bicycles adopted by the United States consumer product safety
commission and codified at 16 CFR 1512 or its successor regulation.
(b) A class 2 electrical assisted bicycle must operate in a manner so that the electric
motor is disengaged or ceases to function when the brakes are applied. Class 1 and class 3
electrical assisted bicycles must be equipped with a mechanism or circuit that cannot be
bypassed and that causes the electric motor to disengage or cease to function when the rider
stops pedaling.
(c) A class 3 electrical assisted bicycle must be equipped with a speedometer that
displays, in miles per hour, the speed the electrical assisted bicycle is traveling.
(11) A person who violates this section commits a class B traffic infraction.

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