N.Y. Comp. Codes R. & Regs. tit. 17 § 2H.104
Option:
01 Political Boundary signs (see Sign Drawings SD-G5 and SD-G6) may be used to provide information to motorists about the locations of state, county, town, city, village, and unincorporated place boundaries.
Standard:
02 The lettering for names of places, streets and highways on Political Boundary signs shall be composed of a combination of lower-case letters with initial upper-case letters (see Section 2A.13 ).
Guidance:
03 The State Boundary (NYI12-4) sign should be used to inform motorists that they are entering the state of New York. If the speed limit does not change at the border, the State Boundary sign should be located at the border and precede the speed limit sign; if the speed limit changes at the border, the Speed Limit sign should be located at the border and the State Boundary sign should be located beyond the speed limit sign.
04 The Freeway County Boundary (NYI12-3a) sign should be used on freeways to inform motorists about the location of a county boundary.
05 The Freeway Municipal Boundary (NYI12-3b) sign should be used on freeways to inform motorists about the location of a village, town or city boundary.
06 The Conventional Boundary (NYI12-2a) sign should be used on conventional highways and expressways to inform motorists about the location of a county, village, town, or city boundary.
07 The Unincorporated Place Boundary (NYI12-1) sign should be used on conventional highways and expressways to inform motorists about the location of an unincorporated place boundary.
08 Where a Speed Limit sign (see Section 2B.13 ) and a Political Boundary sign would conflict, the Political Boundary sign should be placed at a suitable location before or after the Speed Limit sign.
N.Y. Comp. Codes R. & Regs. Tit. 17 § 2H.104