Standard LED lights: These are the most basic and widely used type of LED lights for traffic signals. They consist of individual LEDs arranged in a circular or rectangular shape, forming a single color or symbol. They are usually red, yellow, or green, and can also display arrows or bicycles. They are energy-efficient, durable, and visible in daylight

DIP LED lights: These are similar to standard LED lights, but they use dual in-line package (DIP) technology to connect the LEDs to the circuit board. This makes them more resistant to water and dust, and also allows them to have higher brightness and wider viewing angles. They are often used for pedestrian crossings, countdown timers, and variable message signs

SMD LED lights: These are also known as surface mount device (SMD) LED lights, and they use a different technology to attach the LEDs to the circuit board. Instead of using wires or pins, they use solder paste to mount the LEDs directly on the surface of the board. This reduces the size and weight of the light, and also improves the heat dissipation and color uniformity. They are often used for full-color displays, dynamic message signs, and video screens

COB LED lights: These are also known as chip on board (COB) LED lights, and they use a newer technology to integrate multiple LED chips into a single module. This creates a high-density and high-intensity light source that can produce a uniform and bright light output. They are often used for high-end applications, such as intelligent traffic systems, adaptive signal control, and smart city projects