It was just one of an increasing number of fatal car crashes in the U.S. in 2020. So if Americans drove so much less, why were there so many more fatalities on the roads? Studies have proven that even a 10 percent change in the average speed is more likely to impact traffic fatalities than a 10 percent change in traffic volume. Both Virginia and Minnesota, for example, reported increases in traffic fatalities with passengers or drivers not wearing seat belts in 2020 compared to 2019. We intend to use all available tools to reverse these trends and reduce traffic fatalities and injuries,\" Dr. Steven Cliff, NHTSA's acting administrator said in a press statement.