Google partnered with Inrix to provide realtime data, particularly traffic travel times, to Google Maps' service. According to paidContent, Inrix achieves this in part by crowdsourcing information from the 30 million wireless and GPS devices on its network.
The Inrix-powered Google Maps is already available to users in eight countries, with more to come. It provides live traffic updates as well as a traffic predictor, which users can set to a specific day of the week and time to gauge their commute. Inrix currently has traffic data for 22 countries.
Google launched traffic estimates in 2007, crowdsourcing information through phone-users who enabled the My Location feature. Google temporarily discontinued the service because the results were not accurate enough.