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To assess effects of the 1999 Maryland graduated driver licensing (GDL) law on both 16-year-old drivers and other road users. Method: Calculation and comparison of crash involvement rates and non-fatal injury rates pre-GDL (1996–1998) and post-GDL (2001–2003) by type of road user, per population, and per licensed driver, with adjustment for trends among 30–59-year-old drivers. Results: Post-GDL, prevalence...
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