Automatic vehicle location
Encyclopedia : A : AU : AUT : Automatic vehicle location
Automatic vehicle location is a means for determining the location of a vehicle and transmitting this information to a point where it can be used.
Most commonly, the location is determined using GPS, and the transmission mechanism is a radio or cellular connection from the vehicle to a receiver or nearby cell tower. Some other possibilities for determining location, for example in environments where GPS is not usable, are dead reckoning, inertial navigation, or RFID readers; sometimes a combination of these methods can be used. The tracking data is then transmitted using any one of a variety of telemetry systems; GSM is one of the most common technologies used for telemetry, because of the low data rate needed for AVL, and the low cost and near-ubiquitous nature of GSM networks.
Automatic vehicle location is a powerful tool for managing fleets of vehicles, from service vehicles, emergency vehicles, and construction equipment, to public transport vehicles (buses and trains).
External links
- [AVL explained]
- [Global Location Sytems]
- [Real-time AVL]
- [GSM and GPS AVL]
- Silicon.com report: [London's bus-tracking system gets £116m update]
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