Google is incredible in the wide array of services that it offers for free. Google has just increased the number of cities where real-time traffic data is provided by adding Bogotá, Panama City and San Jose (Costa Rica) to the list. They have also included 130 new United States cities in this increased offering.
The cool part about how all this works is that it relies on people using Google Maps. Google Maps then reports back anonymous speed and location data to Google where it is combined into traffic data and sent back for free. The issue is that this crowdsourcing needs lots of users to provide reliable data. Thanks to the widespread adoption of Android, this has become easier and Google can provide information for more locations.
Google Maps will now be able to show data for side roads and arterial roads that don't get as much traffic as the main highways. In addition to the 130 new US cities that Google has added, they have also added support around the world in countries including "Brazil, Canada, China, Czech Republic, France, Germany, Italy, Mexico, Russia, Spain, Sweden, and the United Kingdom."