MUTCD W9-3: Lane Closed Signs
The W9-3 sign is covered in Section 6H.07 of the Manual on Uniform Traffic Control Devices, 11th Edition. Below are the provisions from that section that describe when the sign is used and how it is placed.
What it means and when it is used
- Standard · Required (shall)The Lane(s) Closed sign (see Figure 6H-1 ) shall be used in advance of that point where one or more through lanes of a multi-lane roadway are closed.
- Standard · Required (shall)For a single lane closure, the Lane Closed (W20-5) sign (see Figure 6H-1 ) shall use the legend RIGHT (LEFT) LANE CLOSED. Where two or more adjacent lanes are closed, the W20-5a sign (see Figure 6H-1 ) shall use the legend XX RIGHT (LEFT) LANES CLOSED.
Where to read the rest
- Full text: MUTCD Section 6H.07: Lane Closed Signs
- Mounting height, lateral offset and retroreflectivity for any sign: MUTCD sign placement guide
Related signs in Section 6H.07
Source: Manual on Uniform Traffic Control Devices, 11th Edition (Federal Highway Administration, December 2023, public domain). Excerpts are shortened and shown out of context; read the full section before specifying a sign. Your state may still be operating under the 2009 edition or a state supplement. Official manual: mutcd.fhwa.dot.gov.