The control system includes a smart energy-saving control unit, a traffic information detection unit, a communication unit, and several lighting units. The intelligent energy-saving control module is used, including microprocessor, AC-DC voltage regulator module and IGBT module (SCR). The input end of the voltage regulator module is connected to the DC power supply, and the stable power supply is output to the microprocessor, and the processor sends instructions to the IGBT module. In this design, the microprocessor uses the STC89C52 microcontroller minimum system, and the signal output terminal can output RS232 signal through the RS485 conversion module output RS485 communication signal. The lighting unit includes a sub-controller and an LED lighting module, and the LED lighting module receives a road information control light group switching signal sent by the main controller. 1. The traffic information detection unit sends the collected road vehicle information to the intelligent energy-saving control unit, and the intelligent energy-saving control unit processes the signal and sends it to several lighting units through the communication unit. 2. A controller can be used to control the tunnel light group in a short tunnel, while a lighting control system is composed of multiple controllers in a long tunnel. Each controller is universal, that is, it can work in any section of the tunnel (entrance section, transition section...). 3. The brightness of the self-adjusting LED tunnel lamp group is automatically adjusted according to the lighting conditions in the tunnel, and the brightness meets the requirements of the Code for Design of Ventilation and Lighting of Highway Tunnels. At the same time, the selective switch of the tunnel lamp group is controlled according to the traffic conditions of vehicles. The tunnel lighting is like a bright belt accompanying the vehicles, but under special circumstances (such as excessive traffic flow), the system will automatically set to the constant light mode. 4. The model of the light brightness control system is built independently. The light brightness control system is connected with the light sensor module, and the LED lamp is used as the load for testing. The LED is a 5050 package patch with positive white light and a color temperature of 6000-6500k is similar to that of natural light 3000-6500k. The middle part is the smallest single-chip system, including reset circuit, clock (crystal oscillator) circuit, power supply and ground are led out by row pins respectively, which is convenient for other modules to refer. (1) The new energy-saving tunnel lighting control system saves about 36% energy and reduces carbon dioxide emissions by about 40% compared with ordinary LED lights; (2) The new energy-saving tunnel lighting control system saves about 75% energy and reduces carbon dioxide emissions by about 74% compared with traditional incandescent lamps; (3) The new energy-saving tunnel lighting control system can not only meet the lighting environment required by the actual driving, but also achieve high efficiency and energy saving. It can reduce the possibility of inducing traffic accidents and at the same time has objective economic benefits. It can provide reference to the modern technology of tunnel lighting at this stage.