Modeling the Motorcycle Crash Severity on Nonintersection Urban Roadways in the Australian State of Victoria Using a Random Parameters Logit Model

Due to a lack of physical protection and balance, motorcycle riders are one the most vulnerable road users more likely suffer severe injuries than motorists. Between 2009 2020, about 60% crashes occurred on nonintersection urban roadways in Victoria, Australia. While considerable research intersections their influence severity has been conducted, there limited studies roadways. Since gathering all information from every crash may not be possible, heterogeneity can arise unobserved factors cause problems developing reliable models. Therefore, this study aims investigate contributing Victorian while considering factors. A total 10,897 motorcycles data beginning November 2020 State Australia, were analyzed. random parameters (mixed) logit model (RPL) was used for evaluating crashes. The divided into three categories: fatal injury, serious minor injury. Also, marginal effects calculated see how each parameter estimate affects outcomes. RPL results showed that some increased likelihood injuries. These included wearing helmet, being older rider age group, riding during early morning or midnight hours, weekend use, hours (00:00–6:29 A.M), insufficient lighting (dark dusk/dawn). following enhanced probability injuries: having pillion passenger, 7 years, at higher speed limits (more 50 km/h) peak (6:30−8:59 younger group (less 26 years old). findings valuable resources safety policy managers develop effective strategies improving motorcyclists’ nonintersections. This include light conditions nonintersection, encouraging motorcyclist maintain regularly, educating wear avoid distractions, ride responsibly weekends.