Travel times in Mexico City are 52 percent longer during heavy traffic times, making it the most traffic jam prone city in North America. While this figure refers to additional average travel time throughout the day, on average, evening peak times make travelling by car 87 percent longer. The West Coast has the most congested cities for the United States and Canada as well, namely Los Angeles and Vancouver, respectively.
Effects of traffic
Workers in the U.S. can spend, on average, some 24 to 30 minutes commuting to work, depending on the region. This can be longer in large cities, adding a significant time to people’s working days without increasing their income. Increased traffic also leads to a higher number of fatal crashes, all else being equal.
Transportation is also one of the leading contributors to carbon dioxide emissions, and traffic jams contribute to this by extending the time that cars are running. Local air pollution is also a concern, particularly in Mexico where almost 50,000 people died from air pollution exposure in 2017.
North America's most traffic jam prone cities as of 2019
Longer travel time relative to uncongested traffic
TomTom used GPS data to compare travel times during the whole day and during peak periods to travel times during non-congested periods. Includes cities with a population of 800,000 or over. The figures are based on 2019 TomTom traffic data.
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TomTom. (April 16, 2020). North America's most traffic jam prone cities as of 2019 [Graph]. In Statista. Retrieved April 12, 2021, from https://www.statista.com/statistics/235786/most-traffic-jam-prone-cities-in-north-america/
TomTom. "North America's most traffic jam prone cities as of 2019." Chart. April 16, 2020. Statista. Accessed April 12, 2021. https://www.statista.com/statistics/235786/most-traffic-jam-prone-cities-in-north-america/
TomTom. (2020). North America's most traffic jam prone cities as of 2019. Statista. Statista Inc.. Accessed: April 12, 2021. https://www.statista.com/statistics/235786/most-traffic-jam-prone-cities-in-north-america/
TomTom. "North America's Most Traffic Jam Prone Cities as of 2019." Statista, Statista Inc., 16 Apr 2020, https://www.statista.com/statistics/235786/most-traffic-jam-prone-cities-in-north-america/
TomTom, North America's most traffic jam prone cities as of 2019 Statista, https://www.statista.com/statistics/235786/most-traffic-jam-prone-cities-in-north-america/ (last visited April 12, 2021)