Not surprisingly, five are in the US: Los Angeles: (1), New York City (3), San Francisco (4), Atlanta (9) and Miami (11) . Moscow (2) tops the foreign city list, followed by Bogata (5), Sao Paulo (6), London (7), Magnitogorsk (8), Paris (10) and Bangkok (12).

If your travels this year take you to any of those congested cities, reconsider doing it with your own or rented car. Weigh the costs, including finding expensive places to park. Check latest internet info on city bus routes, taxi, Uber, Lyft and other urban transportation facilities.