As noted, we are dealing with small numbers when we focus on DC and the % change sounds dramatic.
That said, this is part of a national trend:
NHTSA Early Estimates Show Record Increase in Fatalities Nationwide
https://www.nhtsa.gov/press-releases/early-estimates-first-quarter-2022
...
"NHTSA estimates that 9,560 people died in motor vehicle traffic crashes in the first quarter of 2022. This is an increase of about 7% as compared to the 8,935 fatalities projected for the same quarter in 2021. This would be the highest number of first-quarter fatalities since 2002."
I have read that Covid cleared the streets of traffic and dangerous driving habits became the new normal; the older office workers and school buses were parked while the roads were left to younger, more aggressive drivers. As people start driving again they adapted to the newer, more dangerous habits of those on the roads.
Plus, I think many folks are just burned out and DGAF.