MUTCD EM2-1: AREA CLOSED Sign

The EM2-1 sign is covered in Section 2N.04 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

• Guidance · Recommended (should)
  The AREA CLOSED (EM2-1) sign (see Figure 2N-1 ) should be used to close a roadway in order to prohibit traffic from entering the area. It should be installed on the shoulder as near as practical to the right-hand edge of the roadway, or preferably, on a portable mounting or barricade partly or entirely in the roadway.
• Guidance · Recommended (should)
  For best visibility, particularly at night, the sign height should not exceed 4 feet measured vertically from the pavement to the bottom of the sign. Unless adequate advance warning signs are used, it should not be placed to create a complete and unavoidable blocked route. Where feasible, the sign should be located at an intersection that provides a detour route.

Where to read the rest

• Full text: MUTCD Section 2N.04: AREA CLOSED Sign
• Mounting height, lateral offset and retroreflectivity for any sign: MUTCD sign placement guide