In need of warning signs or object markers for your roadway project? If so, click to shop the list of OSHA and ANSI signs available from Worksafe. W3-6 (Draw Bridge) W3-7 (Ramp Meter Ahead) W3-8 (Ramp Metered When Flashing) W4-3R (Added Lane) W4-4aP. Barricade Lights: Flashing, Solar & LED Barricade Lights