N.Y. Comp. Codes R. & Regs. tit. 17 § 2D.40
INSERT the following paragraphs:
Support:
03A Although one Destination sign along an intersection approach is usually sufficient, a series of two or more signs along a multi-lane approach might better enable motorists to select the proper lane.
Guidance:
03B Where a second destination sign is used along an intersection approach to enable proper lane selection, it should be placed between 800 and 1400 feet in advance of the intersection. Where a route sign Junction assembly is used, this sign should be placed between two hundred and four hundred feet in advance of the Junction assembly.
Option:
03C A supplemental Destination sign may be located on the far right corner of the intersection where the approach is controlled by a stop sign or flashing red signal indication. A supplemental Destination sign may be located on the far side of the stem of a 'T' intersection. If longitudinal space along the intersection approach is severely limited, this location may also be used as an alternative to the advance location on the intersection approach.
N.Y. Comp. Codes R. & Regs. Tit. 17 § 2D.40