This document describes a GPS-based vehicle tracking and monitoring system using Arduino. The system uses a GPS module to obtain location data and a GSM module to send the location to authorized users via SMS. When a registered user texts the system, it replies with the vehicle's current latitude and longitude, which can be viewed on a map. The system is intended to help with vehicle security, tracking salespeople, and monitoring private drivers. It provides location updates every 10 seconds while the vehicle is moving.