RT Journal Article SR Electronic T1 Impact of graduated driver licensing restrictions on crashes involving young drivers in New Zealand JF Injury Prevention JO Inj Prev FD BMJ Publishing Group Ltd SP 292 OP 296 DO 10.1136/ip.7.4.292 VO 7 IS 4 A1 D J Begg A1 S Stephenson A1 J Alsop A1 J Langley YR 2001 UL http://injuryprevention.bmj.com/content/7/4/292.abstract AB Objective—To determine the impact on young driver crashes of the three main driving restrictions in the New Zealand graduated driver licensing (GDL) system: night-time curfew, no carrying of young passengers, and a blood alcohol limit of 30 mg/100 ml. Method—The database for this study was created by linking police crash reports to hospital inpatient records (1980–95). Multivariate logistic regression was used to compare car crashes involving a young driver licensed before GDL (n=2252) with those who held a restricted graduated licence (n=980) and with those who held a full graduated licence (n=1273), for each of the main driving restrictions. Results—Compared with the pre-GDL group, the restricted licence drivers had fewer crashes at night (p=0.003), fewer involving passengers of all ages (p=0.018), and fewer where alcohol was suspected (p=0.034), but not fewer involving young casualties (p=0.980). Compared with the pre-GDL drivers, those with the full graduated licence had fewer night crashes (p=0.042) but did not differ significantly for any of the other factors examined. Conclusion—These results suggest that some of the GDL restrictions, especially the night-time curfew, have contributed to a reduction in serious crashes involving young drivers.