N.Y. Vehicle & Traffic Law § 1164: Signals by hand and arm or signal lamps

§ 1164. Signals by hand and arm or signal lamps. (a) Any stop or turn

signal when required herein shall be given either by means of the hand

and arm or by signal lamps, except as otherwise provided in subsection

(b).

(b) Any motor vehicle in use on a highway shall be equipped with, and

required signal shall be given by, signal lamps when the distance from

the center of the top of the steering post to the left outside limit of

the body, cab, or load of such motor vehicle exceeds twenty-four inches,

or when the distance from the center of the top of the steering post to

the rear limit of the body or load thereof exceeds fourteen feet. The

latter measurement shall apply to any single vehicle, also to any

combination of vehicles. On a combination of vehicles, the rear signal

lamps shall be at the rear of the last vehicle in the combination. The

provisions of this subdivision shall not apply to a vehicle, alone or in

combination with other vehicles or implements, if such vehicle is used

solely for agricultural purposes, and is not designed and intended

primarily for use on the highway, or to fire vehicles, or to special

purpose commercial motor vehicles registered under schedule F of

subdivision seven of section four hundred one of this chapter.