NHTSA says here [0] that it's a factor in 29% of fatalities. I think there's also reason to suspect that number is underreported. The responding officer has to

NHTSA says here [0] that it's a factor in 29% of fatalities. I think there's also reason to suspect that number is underreported. The responding officer has to make the judgement on the scene that speed was a factor and decide to write that down on the accident report. We should really be doing a lot more tracking of this kind of data using telemetry in the cars themselves (ideally as required by insurance). [0] https://www.nhtsa.gov/risky-driving/speeding https://www.nhtsa.gov/risky-driving/speeding