(WHTM) — Those who drive know about the dreaded traffic jams and congestion that can occur on interstates, highways, and even two-lane roads. But, have you ever thought why traffic exists in the first ...

The worst kind of traffic jam is a “phantom” traffic jam — those backups that occur for seemingly no reason. Phantom jams leave you sitting there wondering: Why? Fact is, we do know what causes them, ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Nationwide, AAA has already predicted that ...