GPS Based Toll Collection System Using ESP32

The growing need for efficient transportation infrastructure exposesthe limitations of traditional toll collection systems, which dependon manual processing and physical checkpoints. This project proposesa smart, GPS-based automated toll collection system using the ESP32microcontroller, NEO-6M GPS module, and wireless communication.The system tracks real-time vehicle movement and calculates distanceusing the Haversine formula, with a minimum movement threshold toreduce GPS noise. Upon reaching a predefined distance, the ESP32sends an SMS via the Twilio API over Wi-Fi, detailing the distancetraveled and toll amount. This solution removes the need for tollbooths, reducing congestion, delays, and operational costs. Testing confirmed accurate tracking and reliable SMS alerts. The systemprovides a scalable and low-cost tolling method, ideal for smart transportation. It also offers potential for future upgrades, including GSM-based alerts, mobile app support, and cloud integration, paving the way for intelligent and automated road infrastructure