American Safety Vest's roll-up signs warn traffic of possible problems ahead. The bright fluorescent orange vinyl signs are made of heavy weight mesh and can be either 36- or 46-in. square to fit most standard stands. The signs can carry standard or custom legends including: Men Working, Flagger Ahead, Road Work Ahead, Road Closed Ahead, Left Lane Closed Ahead, and Right Lane Closed Ahead. Additional legends, ribs and stands are available.