New York Laws
Article 40 - Regulation of Traffic by County Superintendent of Highways
1651 - Traffic Regulations on County Roads Outside of Cities and Villages.

ยง 1651. Traffic regulations on county roads outside of cities and
villages. The county superintendent of highways of a county may by
order, rule or regulation designate county roads in such county outside
of cities and villages as through highways and order traffic signals,
stop signs, flashing signals or yield signs erected on county roads or
town highways at specified entrances to such through highways or
designate any intersection of a county road with another county road or
with a town highway as a stop intersection or a yield intersection and
order like signs or signals at one or more entrances to such
intersection.