With the lamp power ranging from 5w to 200w, Road Smart solar street lights are ideal for outdoor lighting in remote villages roads and core city streets. The solar charging efficiency is pretty high, even in cloudy days, the solar panel can convert sunlight into electrical energy. The solar lighting system is provided with lithium battery storage backup sufficient to emit the lights for 5-7 continuous rainy days. It should be mentioned that the lighting performance is pretty good, bright lighting beam and wider lighting area without any glare or dark spots. The lighting system is also provided with automatic ON/OFF switch for dusk to dawn operation. Embedded sensors, including light sensor, time sensor, motion sensor altogether enable more intelligent street lighting. The last but not the least, we should introduce the controller which play an important role in solar lighting system. It not only automatically monitor and control the system to ensure intelligent lighting, but also protect various module from potential damage caused by high/low temperature, over charge/discharge etc, which further extend the life service time of whole lighting system.