The document discusses automatic vehicle locator (AVL) technology using GPS. AVL allows real-time vehicle tracking using a GPS receiver in the vehicle that communicates with a dispatch center. It can track vehicles, provide emergency communication, and monitor driving practices. AVL has applications in cargo and child tracking, military use, and geo-caching websites. It offers a solution to locate stolen vehicles or vehicles in difficult conditions and track the movement of buses, cargo, children, and more.