The TIAA MRT lighting system was designed according to the use of lighting and illumination in the station building floors, route tunnels and other buildings with the use of the decorations and nature of the area. In order to save energy, the voltage of the lighting system adopted 220V / 60Hz AC power supply and utilized high powered, energy-saving lamps. In addition, the lighting fixture of the track area, equipment rooms and outdoor area used IP65 dustproof and waterproof design. In the configuration of all lighting, 25% of the proportion is emergency lighting. When the circuit fails, the emergency lighting power supply will be respectively supplied by the UPS and diesel generators; the emergency lighting in the stations are merged into normal lighting to operate at all times. On the other hand, tunnel lightings are all supplied by the UPS system.
In accordance with different station buildings, regional characteristics and ceiling style, different types of lighting configuration and equipment was adopted. Most of the lights in the station used fluorescent lamps; part of the landscape and high-ceiling area used complex metal lights; the reinforced lighting at the rail adopted the high pressure sodium lamp. As for the equipment rooms, the lighting is used to maintain the safety of emergency situations. Therefore, in principle, instant lighting is used. Moreover, the choice of light bulbs and tubes must be able to be easily replaced to facilitate maintenance operations.