Option:
01 The UNDERPASS (NYW7-9) sign (see Sign Drawing SD-W22) may be used, as necessary, to warn of underpasses which are not adequately visible to approaching traffic for sufficient distances and which, upon coming into view, may cause indecision regarding vertical or lateral clearance.
Guidance:
02 The UNDERPASS sign should not be used where:
N.Y. Comp. Codes R. & Regs. Tit. 17 § 2C.115