With the development of GPS positioning technology and the emergence of GIS technology, since the early 1990s, in order to meet the requirements of the new intelligent transportation system for vehicle positioning and scheduling technology, foreign countries have developed a navigation and positioning technology based on GPS positioning technology system. At present, the French car positioning and dispatching system, the Travek car positioning and dispatching system developed by the research laboratory of the American general motors company, and the cruise partner NV developed by sumitomo company