Smart Traffic Light System: Revolutionizing City Traffic Management

Smart Traffic Light System - Circuit Diagram 1. System Overview This system allows an ambulance to automatically open a traffic light when it is within range of the intersection. The ESP32 receives location data from the server, and if the ambulance is near, the ESP32 activates a relay to open the light. 2. Circuit Diagram (Text Version) +-----------------+ +------------+ +-------------+ | ESP32 | | Relay | | Traffic | | | | Module | | Light (LED) | | | | | | | | GPIO 5 -------->| IN | | | | | 3.3V ---------->| VCC | | | | | GND ---------->| GND | | | | | | | | | | | | | NO --------> + | | | | COM -------> - | | | | | | +-----------------+ +------------+ +-------------+ 3. Connections Table ESP32 GPIO 5 --> Relay IN ESP32 GND --> Relay GND ESP32 3.3V/5V --> Relay VCC Relay NO --> Traffic Light + Relay COM --> Power Supply + Traffic Light - --> Power Supply -