Read Chapter 1: Bad Medicine, Chapter 2: Deal or No Deal, and Chapter 3: Murder Incorporated from Killed by a Traffic Engineer: Shattering the Delusion that Science Underlies our Transportation System by Wes Marshall
https://islandpress.org/books/killed-traffic-engineer#contents
"Incisive debut polemic...Marshall’s breezy narrative, with section titles like 'What Are We Doing Here?' plunges surprisingly deeply into the nitty-gritty of engineering standards, giving many specialist terms a vigorous, exasperated working-over. Transit nerds and advocates for safer streets will relish the detailed conceptual battle map drawn here."
Publishers Weekly
"Across almost 350 pages, he dispels the notion that safety has ever been at the center of the street design regime and argues that many of the sacrosanct theories of traffic engineering are rooted in 'pseudoscience'.... essential reading whether you’re focused on one street in your neighborhood or your pastime is arguing with traffic engineers at public meetings."