Think traffic congestion's bad in your city? Try driving in mine. According to the INRIX National Traffic Scorecard, L.A.’s the most congested city in the U.S. — a title we’ve held on to since last year. Yay!

Our horrendous traffic congestion contributes to a whole lot of pollution from car emissions — and a lot of time lost just sitting in the car. On the upside, congestion in L.A. dropped by 23.7 percent in 2008 — while nationwide congestion dropped more than 30 percent. Find out how your own city fared on the Traffic Scorecard. The top 10 most congested areas are:

1. Los Angeles, Calif.
2. New York, N.Y.
3. Chicago, Ill.
4. Dallas, Tx.
5. Washington, D.C.
6. Houston, Tx.
7. San Francisco, Calif.
8. Boston, Mass.
9. Seattle, Wash.
10. Minneapolis-St.Paul, Minn.

The Traffic Scorecard also pinpoints the worst bottlenecks around the country, too. Just so you know, L.A.’s got 14 of the 50 worst bottlenecks in the U.S — and 7 of those 14 are on the 101 freeway!

Photo by andropolis