Lane Shift Ahead construction signs guide traffic safely through work zones and other traffic pattern changes. Lane Shift Ahead signs come in the brightest orange fluorescence with bold, clearly legible black border and text. Diamond Grade ACM reflective finish enhances visibility for wider range of lighting and weather environments. Measures 48” x 48”, MUTCD W20-5(4). Convenient ID legend. Shop more road construction signs and stands at 95TSS.