Men at Work Sign
- A Workers (W21-1) sign may be used to alert road users of workers in or near the roadway
- Withstands extreme temperatures and outdoor environments
- Reflective sign face provides added visibility in low-light conditions
- UV resistant inks prevent fading during long-term outdoor use
- Supplied with top and bottom center holes for post or fence mounting
- Meets ASTM D4956 Type 1 standards
- Compliant with MUTCD Section 6F.33
- Rounded corners, 1/4" corner holes, or 3/8" postmount holes
- Service temperature range: -40° to 250°F
- Meets ASTM requirement standards for D4956-09 Type III and Type IV, as well as ASTM 4956-07 Type X
