For people who still have jobs, there’s finally some relaxing news: new data showing commutes are getting easier.

On average, Americans spent 13 fewer hours stuck in traffic in 2008 than in 2007, according to an annual road traffic reportreleased Wednesday by Inrix. Inrix collects data on road congestion, in part, from a million vehicles equipped with GPS-enabled devices like cellphones and car navigation systems. Inrix cited volatile fuel prices as one reason for the decline in road travel, along with the economy. Some of the findings from the report:

– Riverside, Calif., with the third-highest level of home foreclosure activity last year, saw the highest drop in traffic congestion.

– Detroit, where unemployment rose about 21%, saw the second largest decrease in congestion, tied with San Diego.

Click here to read the entire article and watch the video of Inrix CEO Bryan Mistele talking about the annual traffic report.