Some cities are notorious for extreme traffic jams. Find out which is the worst when it comes traffic congestion in North America.
6. Seattle -- Average congestion level: 27 percent
Morning peak: 47 percent
Evening peak: 68 percent
No email address was supplied by
To complete your registration on this site, please supply an address.
Please confirm or modify the email address to which you will have subscription offers sent.
For a more personalized experience, please supply the following optional information.