OBJECTIVES: We compared rates of risky driving among novice adolescent and adult drivers over the first 18 months of adolescents' licensure. METHODS: Data-recording systems installed in participants' vehicles provided information on driving performance of 42 newly licensed adolescent drivers and their parents. We analyzed crashes and near crashes and elevated g-force event rates by Poisson regression with random effects. RESULTS: During the study period, adolescents were involved in 279 crashes or near crashes (1 involving injury); parents had 34 such accidents. The incidence rate ratio (IRR) comparing adolescent and parent crash and near-crash rates was 3.91. Among adolescent drivers, elevated rates of g-force events correlated with crashes and near crashes (r = 0.60; P < .001). The IRR comparing incident rates of risky driving among adolescents and parents was 5.08. Adolescents' rates of crashes and near crashes declined with time (with a significant uptick in the last quarter), but elevated g-force event rates did not decline. CONCLUSIONS: Elevated g-force events among adolescents may have contributed to crash and near-crash rates that remained much higher than adult levels after 18 months of driving.
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机译：目的：我们比较了在青少年执照的前18个月中，青少年新手和成年驾驶员的危险驾驶率。方法：参与者车辆中安装的数据记录系统提供了有关42位新许可的青少年驾驶员及其父母的驾驶性能的信息。我们通过随机效应的泊松回归分析了撞车事故和接近撞车事故以及升高的g力事件发生率。结果：在研究期间，青少年发生了279起车祸或附近的车祸（其中1起涉及伤害）;父母发生了34起此类事故。比较青少年和父母坠机事故及近坠事故发生率的发生率比（IRR）为3.91。在青少年驾驶员中，g力事件的发生率与碰撞和接近碰撞相关（r = 0.60; P <.001）。比较青少年和父母中危险驾驶事件的发生率的内部收益率是5.08。青少年的坠毁率和接近坠毁率随着时间的推移而下降（上一季度显着上升），但重力上升事件的发生率并未下降。结论：青少年中的重力上升可能是导致撞车和接近撞车的原因，在开车18个月后，撞车和接近撞车的比率仍远高于成人水平。
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