It is hard to have traffic fatalities when there is no traffic. This may be what is in store in the short term as the Corona virus turns society on its head.
A domino effect can be initiated when the Corona virus response causes large numbers of businesses and events to close down. This also results in heavy hits to the economy that could be the start of permanent shut downs in jobs, defaults on debt and similar catastrophes that occurred after the 1929 stock market collapse.
We may be seeing fewer motor vehicle collisions in the foreseeable future but that may not be a good thing.