“…Researchers have found that theories such as the Health Belief Model, Locus of Control, and the Theory of Planned Behavior can help to explain why riders use motorcycle helmets (Aghamolaei, Tavafian, & Madani, 2011, Özkan, Lajunen, Doğruyol, Yıldırım, & Çoymak, 2012. Social norms and attitudes towards helmet use have also been found to have an influence on use rates (Bachani et al, 2013;Haqverdi, Seyedabrishami, Groeger, 2015;Li, Li, Cai, Zhang, & Lo, 2008). Since this study uses an observation based data collection framework, subjective variables that could potentially help to explain variance in helmet use were not assessed.…”