You might find this hard to believe if you’re often stuck in traffic, but a new study reveals we aren’t driving as much as we used to. The study from the consumer group U.S. PIRG finds Virginians drove about 10,000 miles per person in 2011, a nearly 6% decline over a six-year period. Study author Phineas Baxandall says there are a number of reasons why people are driving less. In Washington, there was a 14% decrease in the number of miles driven per person. Baxandall says the information about driving trends is critical as transportation planners make decisions about future projects. He adds the report means new toll roads in Virginia might not be as profitable as the state has hoped.