Integration of traffic data with navigation systems enables navigation systems to use
traffic and other related data to optimise routing and travel times by taking into account traffic conditions and other disruptions to traffic flows. The integration may occur in a number of ways. For example, integrated
automobile navigation system
An automotive navigation system is part of the automobile controls or a third party add-on used to find direction in an automobile. It typically uses a satellite navigation device to get its position data which is then correlated to a position on ...
s use an on-board navigation system and cellular telephone. The navigation system would use the
global positioning system
The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite ...
(GPS) to position the automobile with respect to streets in a map database, to determine a route to the destination and to update the location as the automobile moves. A cellular telephone in the automobile may then communicate with a traffic information server to obtain travel times for each street segment of the route, which would then be used to refine the planned route, or to offer to the driver as an alternative. The cellular telephone can also be used to provide dynamic travel time information to the traffic information server, with each automobile in the system periodically transferring travel times for each segment that is traversed. The traffic information server would then analyse travel times to update travel time data for each street segment, which is then available to other users when they next connect to the traffic server. Other integration models exist.
According to Consumer Reports, the data may be transmitted through
Bluetooth
Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limi ...
,
FM, or
XM.
In 2006,
Clear Channel made a deal with
BMW to supply traffic data for the carmaker's
navigation units.
According to GPS Review, the suppliers of traffic data to the navigation units get their own data from "road sensors, local departments of transportation, data collected from operators of large fleets of vehicles, and other manual sources such as traffic helicopters and listening to police scanners."
Patents have been taken out for services that will collect movement data from
GPS device
A satellite navigation device (satnav device) is a user equipment that uses one or more of several global navigation satellite systems (GNSS) to calculate the device's geographical position and provide navigational advice.
Depending on the ...
s on the road to determine the current travel time between various points.
[For example, Patents US 5933100A]
Automobile navigation system with dynamic traffic data
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See also
* Waze
Waze (; he, ווייז, label=Hebrew), formerly FreeMap Israel, is a subsidiary company of Google that provides satellite navigation software on smartphones and other computers that support the Global Positioning System (GPS). In addition to ...
References
Road traffic management
Automotive navigation systems
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