Most traffic-congested cities:
- Los Angeles, CA
- San Francisco-Oakland, CA
- Chicago, IL-Northwestern IN
- Washington, DC-MD-VA
- Seattle-Everett, WA
- Miami-Hialeah, FL
- Boston, MA
- San Jose, CA
- Denver, CO
- New York, NY-Northeastern NJ
- Phoenix, AZ
- Portland-Vancouver, OR-WA
- Houston, TX
- Minneapolis-St. Paul, MN
- Ft. Lauderdale-Hollywood-Pompano Beach, FL
- San Diego, CA
- Atlanta, GA
- Las Vegas, NV
- San Bernadino-Riverside, CA
- Detroit, MI
Source: Texas Transportation Institute