my country's current industry standard ``Code for Design of Ventilation and Lighting of Highway Tunnels'' (JTJ 026. 1-9999) puts forward the following requirements for tunnel lighting sources and lamps:

　　① Generally, a light source with high efficiency and good fog penetration performance should be selected.

　　② Short tunnels, tunnels near wns with fewer diesel vehicles, emergency parking strips, crosswalks, and roadways can choose light sources with higher color rendering.

　　③ The service life of the light source should not be less than 10000h.

　　④ The protection level of the lamp should not be lower than IP65.

　　⑤ The lamps and lanterns should have anti-glare devices suitable for the characteristics of highway tunnels.

　　⑥ The structure of the lamp should facilitate the replacement of bulbs and accessories.

　　⑦ Lamp parts and components should have good anti-corrosion performance.

　　⑧ Lamp fittings installation should be easy  operate, and the installation angle can be adjusted.

　　⑨ Lamps must not invade the boundary of the tunnel building.

　　⑩ The lighting arrangement in the middle section should meet the flicker frequency lower than 2.5 Hz or higher than 15 Hz.