INRIX has released its 2018 traffic congestion numbers for more than 200 urban areas around the world. Unfortunately, the company changed its methodology from previous years, so the numbers aren’t comparable. It also isn’t clear how INRIX ranks congestion.
For example, the INRIX web page notes that, “In 2018, Bogata drivers lost 272 hours due to congestion — more than any other city in the world.” Yet Bogata is ranked number three behind Moscow (where drivers lost 210 hours) and Istanbul (where drivers lost only 157 hours). The only other data offered for ranking congestion is the speed of driving in the inner city: in Bogata it was 7 mph compared with 11 in Moscow and 10 in Istanbul. So if Bogata is worse on both criteria, why is it ranked only number 3? Continue reading
