"When you factor in an important aspect of that change, vehicle miles traveled (VMT), you actually see that more people died this year, on average, than last year. That's because VMT was down a dramatic 16.6 percent (or 264.2 billion miles) in the first six months of 2020, which pushed up the fatality rate per 100 million VMT, a metric the NHTSA uses to more accurately compare vehicle and road safety over time. Using this number, the NHTSA discovered that fatalities per 100 million VMT climbed to 1.25 in 2020, up from the 1.06 in 2019, despite the same three-year decrease that the agency saw with fatalities-per-VMT that it did with overall fatalities leading into this year."
https://www.caranddriver.com/news/a34240145/2019-2020-traffi...
"When you factor in an important aspect of that change, vehicle miles traveled (VMT), you actually see that more people died this year, on average, than last year. That's because VMT was down a dramatic 16.6 percent (or 264.2 billion miles) in the first six months of 2020, which pushed up the fatality rate per 100 million VMT, a metric the NHTSA uses to more accurately compare vehicle and road safety over time. Using this number, the NHTSA discovered that fatalities per 100 million VMT climbed to 1.25 in 2020, up from the 1.06 in 2019, despite the same three-year decrease that the agency saw with fatalities-per-VMT that it did with overall fatalities leading into this year."