Currently, in the whole world, enormous electric energy is consumed by the street lights, which are automatically turn on when it becomes dark and automatically turn off when it becomes bright. This is the huge waste of energy in the whole world and should be changed. This project is a smart street light system where I am introducing a street light/lamp that efficiently(saves energy) manages electricity usage by turning on automatically before dusk and turn off at dawn and it uses dim lightning when no motion is detected.It will increase light intensity only when motion is detected(ie when pedestrians walk or vehicle is on the road). The main aim of this is that lights turn on when needed and dim light when not needed. The smart street light system consists of LED lights, brightness sensors, motion sensors and short-distance communication networks. The lights turn on before pedestrians and vehicles come and reduce brightness when there is no one.It also displays the range of the object.