Traffic collision data collected by the National Highway Traffic Safety Administration undercounts people injured or killed in automobile collisions because the data only includes serious crashes that take place on public streets. This means that traffic fatalities in parking lots and driveways are not actually tallied, and are actually a bit of a black box in general, given that nobody is keeping track of them. According to a 2021 study from AAA, 20 percent of all collisions in the United States happen in parking lots, and a 2021 estimate from NHTSA put fatalities from “non-traffic crashes” that occurred on private property at about 12 percent of all official pedestrian deaths in 2021.
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