Study ranks Portland as 12th most congested commute in US

Houston has been ranked as the 11th-most congested city in the US, according to a study published today by INRIX Inc.

The TomTom Traffic Index 2017 says Mexico City drivers can expect to spend 66% extra travel time stuck in traffic at any time of the day, up seven percentages points over a year ago.

Moscow fell to second place, followed by New York City, San Francisco and Bogota, Colombia.

The research, by American company INRIX, ranked countries and cities based on how many hours an average citizen spent sitting in traffic in 2016.

Dublin is the slowest major city, with commuters averaging 4.7 miles per hour during congest periods, according to the study.

However, when it came to listing the most congested countries in the world, Thailand came in fist place, with 61 hours of traffic per driver per year.

According to the survey, L.A. motorists spent an average of 104 hours stuck in traffic a year ago.

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That was good (or bad) for fourth in the US, behind LA, New York, and San Francisco.

"The demand for driving is expected to continue to rise, while the supply of roadway will remain flat", Bob Pishue, Inrix's senior economist, wrote last week.

Its Global Traffic Scorecard rated Bangkok the 12th most congested of all cities rated, considerably worse than 30th in 2015.

Manchester is the second most congested United Kingdom city, followed by Aberdeen, Birmingham and Edinburgh.

Pishue says the study used federal metrics for the value of lost time and fuel, along with the environmental impact of carbon emissions to calculate the bottom-line costs to drivers and municipalities from motorists idling in traffic. That comes out to about $1,400 per driver.

Getting stalled on New York's crowded streets for instance cost drivers $2,533 each a year ago, and the city as a whole almost $17 billion.

"But the fundamental problem is that the road operates well above capacity at peak times, it's a popular route that more and more people want to use and they simply can't fit on it".

  • Ronnie Bowen