INRIX Global Traffic Scorecard

Congestion versus mobility

No, Traffic Congestion Does Not Really Cost Every American $1,348 Annually

The INRIX Global Traffic Scorecard exaggerates congestion costs in order to enhance the value of its traffic monitoring services. A little skepticism is justified.

February 13, 2019 - Todd Litman

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Yet Another Flawed Congestion Report

The new INRIX Traffic Scorecard uses "big" data to calculate congestion costs. Like previous studies, it exaggerates traffic congestion costs and roadway expansion benefits.

February 28, 2017 - City Observatory

Same Source Data, 'Contradictory Conclusions' on Congestion

A curious discrepancy between two major congestion reports using the same data: There is a profound and unexplained discrepancy between the travel trends in the latest Urban Mobility Scorecard report and the data provided by Inrix.

September 3, 2015 - City Commentary

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How Not To Measure Traffic Congestion—Hold the Hyperbole, Please!

The new INRIX congestion costing report is another good example of bad analysis. We just want accurate information; hold the hyperbole, please.

October 14, 2014 - Todd Litman

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Top Books

An annual review of books related to planning.

Top Schools

The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.