Street lights are controlled manually in olden days. These days automation of street lights has emerged. But one can observe that there is no need of high intensity in peak hours i.e. when there is no traffic and even in early mornings. By reducing the intensity in these times, energy can be saved to some extent.
There are many methods to save the power like Switching the street light on detecting vehicle , Street light controlling using LDR and relays etc. The proposed circuits controls street light intensity by calculating the peak hours.Two circuits are shown in this article,one explaining the street light control using Raspberry Pi and second explains street light controlling using Raspberry Pi. Most commonly found street lights are HID or High Intensity Discharge lamps, which consume a lot of power. In order to save energy, the circuits are designed with high intensity LEDs in place of HID lamps.