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The Tech Behind Traffic Apps: How (Well) Do They Work?

07:52
As varied as the options are for apps that are available to help you navigate your daily commute, the future of GPS may be more accurate. (Ikon Images/Corbis)
As varied as the options are for apps that are available to help you navigate your daily commute, the future of GPS may be more accurate. (Ikon Images/Corbis)

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