Waze bills itself as a community-based app, and traffic in LA easily becomes a community-wide headache. While keeping the app open while driving, Waze submits your driving status to its maps. In conjunction with more than 30 million users who use the app, Waze's traffic maps stay up-to-date so users can see in real-time where traffic flow is best. If you're stuck in a jam on the 405 and your fuel gauge is approaching empty, the app also gives you up to date gas prices to find the cheapest fuel in your area.

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