According to FARS (Fatality Analysis Reporting System) data from the National Highway Safety Traffic Administration, the state of California has the most traffic fatalities of any state in the U.S. FARS is the data used for providing NHTSA, Congress and the American public yearly data regarding fatal injuries suffered in motor vehicle traffic crashes. The chart above shows data from 2016. As we are currently in 2018, the data for the current year is still being calculated.