“…Assessing risky driving poses methodological concerns. Researchers have typically been forced to rely on subjective data, such as self-reported risk behaviors (e.g., Mitchell, Bambach, & Friswell, 2014; Palk, Freeman, Kee, Steinhardt, & Davey, 2011) and police reports (e.g., Schneider, Savolainen, Van Boxel, & Beverley, 2012; Zhou, Roshandeh, Zhang, & Ma, 2016). The validity of self-reported behavior has been called into serious question (see af Wåhlberg, 2009), and police reports rely on inferences as to the cause of a collision.…”