AAA Traffic Alert
You have two options when bookmarking the map. Please choose the one that best meets your needs.
The traffic information comes from many different sources. In California, freeway speeds are primarily collected by Caltrans from sensors embedded in the roads. We download the raw speed data from them and display it on our site in a (hopefully) easy to use format.
Los Angeles speed data comes courtesy of the Regional Integration of Intelligent Transportation Systems (RIITS) which is sponsored the Los Angeles County Metropolitan Transportation Authority (Metro).
Many of the San Francisco Bay Area sensors come from our partner SpeedInfo.
For the outlying areas of California and rest of the country, the speed information comes from AirSage