In the US we are nearing four million road deaths since we began counting them in 1899. The numbers are getting worse, yet we continue to accept these deaths as part of doing business. There has been no examination of why we engineer roads that are literally killing us. In Killed by a Traffic Engineer, civil engineering professor Wes Marshall shines a spotlight on how little science there is behind the way that our streets are engineered, which leaves safety as an afterthought. While traffic engineers are not trying to cause deliberate harm to anyone, he explains, they are guilty of creating a transportation system whose designs remain largely based on plausible, but unproven, conjecture. Killed by a Traffic Engineer shows how traffic engineering "research" is outdated and unexamined (at its best) and often steered by an industry and culture considering only how to get from point A to B the fastest way possible, to the detriment of safety, quality of life, equality, and planetary health. Killed by a Traffic Engineer is ultimately hopeful about what is possible once we shift our thinking and demand streets engineered for the safety of people, both outside and inside of cars.