Increasing speed limits can lead to more crashes and deaths, AAA finds

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Raising speed limits leads to more frequent car crashes, while lowering them leads to fewer crashes, a new analysis by AAA concludes. It's the kind of conclusion that seems obvious on the surface but still needs to be highlighted given how many states seem convinced that raising speed limits can save drivers time, when all it really does is endanger the lives of pedestrians and cyclists.

The report is the latest in a growing body of evidence that finds that changing speed limits can have a big impact on road safety in the US. AAA analyzed a dozen roadways of varying types in the US in which half raised their speed limits while the other half lowered the limit. The group then did a before-and-after assessment to see what kind of impact...

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