"WARNING" Signs

All warning signs must be approved by HQUSACE following the recommendations of the Sign Advisory Work Group. Approved Warning and other safety signs are found in the USACE Sign Standards Manual – signs for swimming area, boat ramp, other recreation area, and undesignated safety signs are found in section 7; for locks, dams, and waterways safety signs see section 14. A comprehensive list of approved safety signs are found in The Matrix of All Approved Safety Signs on the Gateway. Signs approved since the latest revision of the Sign Standards Manual in June 2006 appear below.

Land-viewed safety signs


Sign Type: WRN-23 Grid: 1 (p 7-63) Panel Size: 13.375A x 10.5A Color: LY/BK Font: Helvetica Bold Reflectivity: Engineer Grade

The following warning signs have been approved for temporary use. These signs must be removed as soon as the condition no longer exists.


	Sign Type: WRN-24 Grid: 1 (p 7-63) Panel Size: 14A x 9A Color: LY/BK Font: Helvetica Bold Reflectivity: Engineer Grade
	Sign Type: WRN-25 Grid: 1 (p 7-63) Panel Size: 12A x 12A Color: LY/BK Font: Helvetica Bold Reflectivity: Engineer Grade

Water-viewed safety sign


	Sign Type: WWA-39 Grid: 1 (p 7-63) Panel Size: 17.625A x 12.5A Color: LY/BK Font: Helvetica Medium Reflectivity: Diamond Grade
	Sign Type: WWA-40 Grid: 1 (p 7-63) Panel Size: 17.125A x 14.5A Color: LY/BK Font: Helvetica Medium Reflectivity: Highly reflective prismatic
	Sign Type: WWA-41 Grid: 1 (p 7-63) Panel Size: 19.2A x 14.0A Color: LY/BK Font: Helvetica Medium Reflectivity: Highly reflective prismatic