Arrow lights, also known as directional LED traffic signals, are one of many types of traffic signals. Arrow lights fall into three categories: right-pointing arrow (right turn), left-pointing arrow (left turn), and upward-pointing arrow (straight ahead). Arrow signals are indicator lights that "exclusively allocate right-of-way" for lanes. Therefore, arrow signals shall not be installed arbitrarily under normal circumstances. If installed, it must be ensured that there is no conflict between the traffic flow in the arrow direction and other traffic flows. They are generally used at intersections on main roads with heavy traffic volume all day long. Do you know how to read LED arrow traffic signals?LED arrow traffic signals are usually configured as three-light units, consisting of red arrow lights, yellow arrow lights and green arrow lights. The power of each light-emitting unit is generally no more than 15W. The color sequence from top to bottom and from left to right is red, yellow and green.Meaning of indications of arrow traffic signals:1. When the green arrow light is on, vehicles are permitted to travel in the direction indicated by the arrow. At this time, any conflicting traffic flow shall be shown with red lights, and vehicles in the green arrow direction have absolute right-of-way.2. When the yellow arrow light is on, vehicles that have crossed the stop line may continue to pass. Meanwhile, it warns drivers that vehicles with conflicting routes may exist for safety alert purposes.3. When the red arrow light is on, vehicles in this lane are prohibited from moving forward.4. The arrow directions of arrow signals, namely left, upward and right, represent left turn, straight movement and right turn respectively.