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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Accid Anal Prev. 2017 Jun 24;106:275–284. doi: 10.1016/j.aap.2017.06.014

Figure 2. Average number of miles driven by teenagers during the learner license stage (with between-subject standard-error bars).

Figure 2

*Negative months indicate the consecutive 9 months of driving required during the learner license stage. All participants held their learner permit for a minimum of 9 months.