Road accidents are a major problem these days. A few of them are due to the human errors while controlling the traffic signals. In this era of advanced technologies, there are many ways to prevent these kinds of blunders. This paper describes an automatic traffic signal which works on piezoelectric power. The traffic lights are working only when the traffic is passing. This way, accidents are not only minimized, but also power conservation can be done. Specially, during midnight or dawn when the traffic is less. This supply of power of the system is self-dependent and is independent of weather or power failure. In an addition, this supply of power can also be used to provide electricity to the street lights and the CCTV Cameras. This way, it can be used to conserve a huge amount of electricity.