“…In addition to research on driver-level interventions, research has examined the effect of driver's license renewal laws on fatal traffic crashes among older people (Grabowski & Morrisey, 2001;Grabowski, Campbell, & Morrisey, 2004;Kelsey, Janke, Peck, & Ratz, 1985, Nelson, Sacks, & Chorba, 1992Levy, Vernick, & Howard, 1995). The results have been mixed.…”