The Arrowmaster Solar-Assisted Advance Warner is a sophisticated, low operating cost arrow board. The revolutionary low power draw controller and LED lamps provide maximum visibility at all times while directing traffic through construction zones. This system is powered by a battery bank of sealed cutting edge, maintenance-free batteries that are hidden inside the trailer deck, charged by a top mounted, shadow free solar panel. The Arrowmaster conforms to, and in most cases, exceeds all federal and state MUTCD specifications.