METHOD FOR DETECTION OF OPTIMAL ROUTE FOR VEHICLE WHICH DRIVES IN CITY Russian patent published in 2000 - IPC

FIELD: transport. SUBSTANCE: method involves production of electronic map for city, matching it to data of traffic speed in city in order to produce electronic velocity map of city, which is stored in computer memory of central station and is broadcasted to users using radio signals. When necessary, electronic velocity map is corrected by means of correcting velocity value on each road, taking into account information navigation messages sent by cars about their coordinates and speed. Said message are received by central station. Corrected information is sent to users, so that their computers calculate optimal routes to their destination with respect to speed. In addition, method involves displaying those routes on user's displays. When car follows chosen optimal route, the route to destination may corrected, when parameters of electronic velocity map change. EFFECT: increased efficiency of road traffic, increased speed for reaching destination. 2 dwg