The LED Arrow Board is a visual directional guidance device engineered for road construction, traffic control, and low-visibility environments. Weighing only 3 kg, it can be carried and deployed by a single person in seconds. High-brightness red LEDs with three display modes — Steady, Fading, and Flashing — deliver excellent nighttime visibility to guide traffic safely. An innovative triple power supply system (Solar / DC / AC) eliminates power concerns in remote areas, while