One application, currently being tested on taxis in Beijing, feeds current traffic data gathered by sensors in other cars on the road to drivers to help them avoid traffic jams.
In early tests, Nissan says the application cuts carbon dioxide emissions by about kilogram a day. That's because driving at a steady pace, rather than in stop-and-go traffic, improves mileage.When one thinks about it, the benefits are obvious. However only, of course, if the information supplied to the navigation system is accurate and timely.
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