Specifications include, but are not limited to: 1. LEDDisplay Physical Requirements 1.1. LED color must be yellow/amber on a black background or the reverse. 1.2. Lettering must be 15 to 18 inches. 1.3. Sign must be viewable up to a 30-degree angle. 2. Electrical Requirements: 2.1. Sign must be available in both commercially available AC power and Solar power. 2.2. Signs power by Solar must operate normally for 10 days without direct sunlight during Utah's inclement weather. 2.3. Signs powered by Solar should include batteries, solar panels (with side mount hardware for a 4-inch pole – not pole top brackets), solar control/chargers, wiring, and mounting hardware. 3. Radar 3.1. Radar must be K Band and license free. 3.2. Radar must acquire target with an acquisition time of less than 0.025 ms. 3.3. Sign must operate normally in the temperature range of -35 degrees C to +75 Degrees C. 4. SignIntensity/Dimming 4.1. Sign must automatically brighten/dim forambient lighting conditions. 4.2. Sign should have a manually selectable initial brightness.