Standard:
01 The ONE LANE ROAD (NYW3-15) sign (see Sign Drawing SD-W4) shall be used on two-lane, two-way highways to warn of locations where alternate one-way operation in one lane is in effect. The ONE LANE ROAD sign shall not be used where the ONE LANE BRIDGE (W5-3) sign (see Section 2C.21) is applicable.
Guidance:
02 The ONE LANE ROAD sign should be used on two-lane, two-way highways where roadway width reduces to less than 16 feet.
03 Where a Signal Ahead (W3-3) sign (see Section 2C.36) and a ONE LANE ROAD sign are needed for the same location, the ONE LANE ROAD sign should be placed in advance of the Signal Ahead sign.
N.Y. Comp. Codes R. & Regs. Tit. 17 § 2C.101