“Center” traffic sign overlay alerts drivers to impending left-lane closures for safe, smooth merging. Panel features MUTCD-compliant fluorescent orange color with bold black print for maximum contrast and visibility. Attaches with reversible, weather-resistant brass snaps. Never lose an overlay again – simply affix the overlay to the back of the sign when storing or not in use. Measures 9” x 30”. MD SPEC. View the complete range of roll up traffic signs, road construction signs, permanent signs, and stands at 95TSS. If you have any additional questions, contact 95TSS for assistance meeting MUTCD specifications in your state.