Specifications include, but are not limited to: Taper from top to bottom of 3 degree to help reduce glare. 24 characters arranged in a 3 X 8 matrix. Character size to 13.0” wide X 18,0” high. Pixel to be four LEDs and 5” - wide X 7” - high, total = 35 per character.(minimum) Lamps to be Amber in color. The yellow shall fit in the Commission Internationale de L’Eclairage (CIE) color box to be perceived as Amber (color range of 589.5 – 592nm). Lamp to be high efficiency light emitting diodes, AllnGap auto-insertion type. Lamps to be screw type, push-on or auto-insertion type. If push-on type lamps are furnished, there to be a means to secure the lamps and wiring leads to the sign to prevent separation due to vibration during travel or operation. Lamps or panels to be easily replaceable. Lamps to be equipped with a minimum 180-degree upper hood or visor to prevent sun washout. Lamp intensity to be such that on a clear night or sunny day, a driver to be able to visibly recognize a legible message from a minimum distance of 750 feet when message board is programmed to arrowboard mode. Left arrow. Right arrow. Double arrow. Four-corner signal. Sequential chevron.