I'm so glad that it's a fact now. LA can talk all about their traffic, but in DC its the whole city ALL FREAK'N DAY! It's like everyone goes to work and heads home at the same time. We're a city of workaholics! Seriously, I've stood on a crowded metro at 9:30pm on a Wednesday FULL of people headed home from work. C'mon!
"Washington D.C. proved to have the slowest drivers, where speeds averaged a mere 46 miles per hour -- although that likely has something to do with TomTom's earlier findings that Washington D.C. also has the most congested traffic in the U.S." -- engadget
Via James