New York Laws
Article 34 - Operation of Bicycles and Play Devices
1236 - Lamps and Other Equipment on Bicycles.

(b) No person shall operate a bicycle unless it is equipped with a
bell or other device capable of giving a signal audible for a distance
of at least one hundred feet, except that a bicycle shall not be
equipped with nor shall any person use upon a bicycle any siren or
whistle.
(c) Every bicycle shall be equipped with a brake which will enable the
operator to make the braked wheels skid on dry, level, clean pavement.
(d) Every new bicycle shall be equipped with reflective tires or,
alternately, a reflex reflector mounted on the spokes of each wheel,
said tires and reflectors to be of types approved by the commissioner.
The reflex reflector mounted on the front wheel shall be colorless or
amber, and the reflex reflector mounted on the rear wheel shall be
colorless or red.
(e) Every bicycle when in use during the period from one-half hour
after sunset to one-half hour before sunrise shall be equipped with
reflective devices or material meeting the standards established by
rules and regulations promulgated by the commissioner; provided,
however, that such standards shall not be inconsistent with or otherwise
conflict with the requirements of subdivisions (a) and (d) of this
section.