A study that examined the effect of Automatic Dependent Surveillance-Broadcast (ADS-B) In on general aviation and air taxi accident rates found a significant reduction in the likelihood of an accident, which decreased by 53 percent, for aircraft equipped with ADS-B In. It also found that the likelihood of a fatal accident decreased by 89 percent for aircraft using ADS-B In.
Source: aopaStudy shows accidents less likely with ADS-B In