As shown on the map, motor-vehicle deaths in the first six months of 2020 decreased by more than 13% in seven states:
- Wyoming (-49%, 39 fewer deaths)
- Alaska (-31%, 11 fewer deaths)
- Hawaii (-27%, 16 fewer deaths)
- Iowa (-24%, 35 fewer deaths)
- North Dakota (-20%, 9 fewer deaths)
- Oregon (-19%, 41 fewer deaths)
- Idaho (-16%, 15 fewer deaths)
Seven states experienced increases of more than 17% (including DC):
- Vermont (+91%, 10 more deaths)
- Connecticut (+44%, 45 more deaths)
- District of Columbia (+42%, 5 more deaths)
- South Dakota (+34%, 11 more deaths)
- Rhode Island (+31%, 8 more deaths)
- Arkansas (+21%, 51 more deaths)
- Missouri (+18%, 68 more deaths)
For detailed state level estimates, select Data Table.
- Data Table
How NSC Calculates Crash Fatality Estimates
NSC collects preliminary motor-vehicle fatality estimates from data reporters in all 50 states and the District of Columbia. State data reporters generally work in state Department of Transportation offices and are often the same individuals responsible for providing data to the National Highway Traffic Safety Administration’s (NHTSA) Fatality Analysis Reporting System (FARS).
Each month, state data reporters provide a first estimate for the previous month’s fatalities and updated estimates for all previously reported months.
NSC maintains a three-year database of all state motor-vehicle fatality estimate reports. Using January as an example, the NSC database includes the January estimate first reported in February, as well as any updated January estimates reported in March, April, May, June, July, August, September, October, November, and December.
Fatality estimates tend to mature over the course of the year. Numbers often increase as fatalities are confirmed. Because of the maturation of the data, NSC calculates year-to-year percent change estimates by comparing monthly motor-vehicle estimates of comparable maturity.
Percent change estimates are multiplied by the most recently available final motor-vehicle fatality estimates reported by NCHS. Therefore, NSC estimates reflect the NCHS definition of motor-vehicle fatalities as both traffic and non-traffic deaths that occur within a year of the incident. Since NHTSA counts only traffic deaths that occur within 30 days of the incident, NSC motor-vehicle fatality estimates are not comparable to NHTSA figures.