See the interactive visualization here.

Traffic is the enemy of nearly every city dwelling American. Efforts to promote "green" commutes and reduce congestion have attracted significant attention for years, but one only has to commute home to see how effective they have been. This visualization shows that every major city in the US has suffered increased congestion in the years since 1982. Click on your hometown in the list to see how public transit ridership and congestion have changed over time.