The Town Board, or its designee, shall install and maintain
traffic control devices when and as required under the provisions
of this chapter, to make effective the provisions of this chapter,
and may install and maintain such additional traffic control devices
as it may deem necessary to regulate, warn or guide traffic under
the Vehicle and Traffic Law of the State of New York, subject to the
provisions of §§ 1682 and 1684 of that law.