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Hitachi Develops Advanced Traffic Information Forecast System.


Tokyo, Japan, Nov 8, 2005 - (JCNN JCNN Japan Corporate News Network ) - Hitachi has developed a system to forecast traffic information based on the data sent by probe cars, which are equipped with a vehicle speed sensor Speed sensors are machines used to detect the speed of an object, usually a transport vehicle. They include:
  • Wheel speed sensors
  • Speedometers
  • Pitometer logs
  • Pitot tubes
  • Airspeed indicators
  • Piezo sensors (e.g.
 and other measurement devices. The new system uses principal component analysis, a statistical method to sort out about 20 temporally correlation patterns in the data on vehicle conditions, such as speed, weather, and braking, which are collected daily through the probe cars.

The system links these patterns with predictive factors such as the days of the week, seasons, and weathers to obtain more precise forecast. Even when there are not enough cars available to collect data, the system compensates for data insufficiency by analyzing correlations with sampled data to cover a wider area.

This technology, along with Hitachi's other telematics Originally coined to mean the convergence of telecommunications and information processing, the term later evolved to refer to automation in automobiles. GPS navigation, integrated hands-free cellphones, wireless communications and automatic driving assistance systems all come under the  systems, will be exhibited at the 12th ITS World Congress held in San Francisco San Francisco (săn frănsĭs`kō), city (1990 pop. 723,959), coextensive with San Francisco co., W Calif., on the tip of a peninsula between the Pacific Ocean and San Francisco Bay, which are connected by the strait known as the Golden  from November 6.

Source: JCN JCN Japan Corporate News
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 http://www.japancorp.net

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Publication:JCNN News Summaries
Date:Nov 9, 2005
Words:164
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