🚦 IoT URL-Based Highway Toll Traffic Light

A smart web-controlled traffic light system for highways and toll booths. Red and green LED arrays signal "Stop & Pay" or "Payment Complete", controlled over a web interface using Arduino Nano, ESP32, and ENC28J60 Ethernet module.

Connections for Network and Web Control

Arduino Nano, Relay Module, and High-Power LED Arrays

✨ Features

• 🌐 Web-Controlled – Change light states via URL commands.
• 🔌 ESP32 + ENC28J60 – Network-enabled IoT device for high-speed response.
• ⚡ High-Power LEDs – 354 LEDs per unit, split between green and red arrays.
• 🔁 Relay Control – Separate drivers for red and green signals, switching with relays.
• 🚦 Toll Booth Ready – Mounted above highways for secure payment verification.

⚙️ Working Principle

The system uses an Arduino Nano to manage relay switching for high-powered LED drivers. Green LEDs indicate successful toll payment, while Red LEDs alert the driver to stop and pay. A separate ESP32 with ENC28J60 Ethernet module provides a web-based control panel, allowing operators to manage traffic signals remotely over a network connection.

🌍 Importance

This system is designed to automate highway toll collection checkpoints, reducing human error and increasing vehicle throughput. By integrating IoT controls, it can be expanded into a smart-city infrastructure, ensuring smoother traffic flow and safer highway management.

🔧 How to Build

1. Assemble Arduino Nano with an 8-channel relay module and LED drivers.
2. Wire the ESP32 and ENC28J60 Ethernet module to provide network connectivity.
3. Create a web server interface on ESP32 to send commands via URL endpoints.
4. Mount LED arrays on highway poles for visibility, with a STOP/GO light pattern.
5. Deploy system at toll booths to automate payment verification signaling.

📦 Repository

🔗 View this Project on GitHub

❤️ Acknowledgements

• ESP32 and ENC28J60 official documentation
• Arduino Relay Module references
• IoT traffic control projects inspiration

MIT Licensed — Innovate, build, and deploy smart traffic systems. ⭐ the repository if this inspires you!