VTrack: Accurate, Energy-Aware Road Traffic Delay Estimation Using Mobile Phones

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Executive Summary

Traffic delays and congestion are a major source of inefficiency, wasted fuel, and commuter frustration. Measuring and localizing these delays, and routing users around them, is an important step towards reducing the time people spend stuck in traffic. As others have noted, the proliferation of commodity smartphones that can provide location estimates using a variety of sensors - GPS, WiFi, and/or cellular triangulation - opens up the attractive possibility of using position samples from drivers' phones to monitor traffic delays at a fine spatiotemporal granularity.

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