N.Y. Comp. Codes R. & Regs. tit. 17 § 2C.126
Option:
01 Driveway Entrance (NYW5-16P, NYW5-17P) plaques (see Sign Drawing SD-W16) may be used to supplement Intersection Warning signs (see Section 2C.46 ) where it is necessary to warn of driveway entrances or crossings.
Standard:
02 An Intersection Warning sign supplemented with a Driveway Entrance plaque shall be called a Driveway Entrance assembly.
03 Driveway Entrance plaques shall not be used alone.
Guidance:
04 Driveway Entrance assemblies should be used only where sight distance is critically limited and traffic conflict at the driveway location would not be expected, or where other conditions require warning for traffic safety.
05 Where a series of two or more similar driveways requires warning, one Driveway Entrance assembly should be used in advance of the first driveway in the series with the appropriate Intersection Warning sign (W2-1, W2-7, or W2- 8).
06 The 24" x 12" (one-line) and 24" x 18" (two-line) plaques should be used to supplement 24" and 30" warning signs. The 36" x 18" (one-line) and 36" x 24" (two-line) plaques should be used to supplement 36" and 48" warning signs.
Option:
07 Where appropriate, plural legends (e.g., "DRIVEWAYS" instead of "DRIVEWAY") may be displayed on the Driveway plaque, and, where the driveways are not all on the same side of the roadway, the W2-1 or W2-7 sign may be used in the Driveway Entrance assembly.
Guidance:
08 Driveway Entrance assemblies should not normally be used for public highway intersections.
09 Part-time signs (see Section 2A.03 ) should be used in Driveway Entrance assemblies where the associated activity (e.g., a truck entrance or crossing) is periodic.
Option:
10 Driveway Entrance assemblies may be used for public highway intersections where such use would be in the public interest, provided that:
Other signs which would indicate the presence of the intersection are not used; and
The facility indicated on the Driveway plaque is the primary generator of traffic entering or leaving the roadway at the intersection.
Standard:
11 A Driveway Entrance assembly shall not be used where a destination sign (see Section 2D.37 ) identifies the entrance, or where the entrance is signalized.
N.Y. Comp. Codes R. & Regs. Tit. 17 § 2C.126