Google Maps adds real-time traffic data

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Google has added real-time traffic data for several major cities to its mapping service, the company said Wednesday.
The traffic information is integrated with Google Maps and is available in more than 30 American cities, including San Francisco, Dallas, Chicago and New York.
The data is provided for major highways and is color-coded to signify traffic conditions: green means no congestion; yellow is for minor holdups; and red means significant slowdowns. Read on at source.