In the course of any day, few things are less exasperating than sitting in traffic as if the highway were a parking lot. It's the main reason people arrive at work or at other appointments late; a source of endless frustration. Here are 15 cities in the US with the most delays in traffic, according to traffic experts from the NTHSA. A delay is defined as anything causing a time constraint; it can be a traffic jam, a construction, or an accident.
15. Philadelphia

14. Miami

13. Dallas

12. Houston

11. Atlanta

10. San Jose

9. Boston

8. Seattle

7. Washington DC

6. Bridgeport, CT

5. New York City

4. Austin

3. San Francisco

2. Honolulu

1. Los Angeles
