Updated: Is traffic worse now? The “congestion report” can’t tell us

Part 1: Resurrecting discredited data to paint a false history The Texas Transportation Institute claims that traffic congestion is steadily getting worse.  But its claims are based on resurrecting and repeating traffic congestion estimates from 1982 through 2009 that were based on a deeply flawed and biased model.  Since 2009, TTI has used different data

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UPDATED (again): Another tall tale from the Texas Transportation Institute

UPDATE: A chorus of congestion cost critiques By this point, researchers and practitioners from around the country (and beyond!) have laid out their problems with TTI’s congestion reports. Here’s a roundup of some of the best: Todd Litman of the Victoria Transportation Policy Institute comprehensively debunks the TTI methodology: “The UMR ignores basic research principles:

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Growing e-commerce means less urban traffic

The takeaway: Urban truck traffic is flat to declining, even as Internet commerce has exploded. More e-commerce will result in greater efficiency and less urban traffic as delivery density increases We likely are overbuilt for freight infrastructure in an e-commerce era Time-series data on urban freight movements suffer from series breaks that make long term

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