<p><div class="KonaFilter image-container display-table"><div><div class="image on-image"><img src="https://static-ssl.businessinsider.com/image/58b6e6515490578d0d8b727a-2000/ap17046095751450.jpg" alt="traffic" data-mce-source="AP Photo/Jae C. Hong" /><p class="source"><span>AP Photo/Jae C. Hong</span></p></div><p></p></div></div></p><p>The average US commuter spends 42 hours stuck in traffic a year, according to a report by the <a href="https://tti.tamu.edu/2015/08/26/traffic-gridlock-sets-new-records-for-traveler-misery/" target="_blank">Texas Transportation Institute</a>.</p><p>But naturally some cities are worse than others when it comes to commuting. TomTom, a navigation and mapping company, ranked which US cities have the most traffic congestion in its 2017 Traffic Index.</p><p>After collecting data over a nine-year time span, TomTom measured the extra travel time experienced by drivers over an entire year. TomTom assessed 189 cities overall and gave each a congestion score out of 100.</p><p>Here are the most congested cities in the US:</p>

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The 10 US cities with the absolute worst traffic

AP Photo/Jae C. HongThe average US commuter spends 42 hours stuck in traffic a year, according to a report by the Texas Transportation Institute.But naturally some cities are worse than others when it comes to commuting. TomTom, a navigation and mapping company, ranked which US cities have the most traffic congestion in its 2017 Traffic Index.After collecting data over a nine-year time span, TomTom measured the extra travel time experienced by drivers over an entire year. TomTom assessed 189 cities overall and gave each a congestion score out of 100.Here are the most congested cities in the US:

AP PhotoJae C.  HongThe average US commuter spends 42 hours stuck in traffic a year, according to a report by the Texas Transportation Institute.

The 10 US cities with the absolute worst traffic

Danielle Muoio

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