Injury severity in delivery-motorcycle to vehicle crashes in the Seoul metropolitan area

•Injury severity in vehicle-to-motorcycle crashes that have occurred during delivery has been analyzed.•To examine the risk of different injury levels sustained under all crash types of vehicle-to-motorcycle, this study applied an ordered probit model.•Factors positively affecting injury severity include crashes with SEVs, traffic violation behaviors, broadside crashes, crashes during night time, and higher speed.•Policy implications were proposed to reduce the injury severity in delivery-motorcycle to vehicle crashes. More than 56% of motorcycles in Korea are used for the purpose of delivering parcels and food. Since such delivery requires quick service, most motorcyclists commit traffic violations while delivering, such as crossing the centerline, speeding, running a red light, and driving in the opposite direction down one-way streets. In addition, the fatality rate for motorcycle crashes is about 12% of the fatality rate for road traffic crashes, which is considered to be high, although motorcycle crashes account for only 5% of road traffic crashes in South Korea. Therefore, the objective of this study is to analyze the injury severity of vehicle-to-motorcycle crashes that have occurred during delivery. To examine the risk of different injury levels sustained under all crash types of vehicle-to-motorcycle, this study applied an ordered probit model. Based on the results, this study proposes policy implications to reduce the injury severity of vehicle-to-motorcycle crashes during delivery.