Traffic congestion has been linked with higher levels of air pollution, which has been found to significantly affect health.

Washington D.C. surpasses Los Angeles as the U.S. city with the worst traffic, with an average commute time of 33.4 minutes.

Drivers in Washington DC now have the longest commutes in the country, and congestion on weekdays spans more than six hours.

Record traffic at Port of LA ahead of new tariffs By Brittany Hope and Génesis Miranda Miramontes • Published July 15, 2025 • Updated on July 15, 2025 at 8:26 am ...