[§291C-85]  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. [L 1971, c 150, pt of §1]