Systematic Analysis of the Contributory Factors Related to Major Coach and Bus Accidents in China

The purpose of this study was: (1) to propose a classification system for the contributory factors behind major coach and bus accidents with mass casualties based on human factor analysis (HFACS); (2) identify main indicators causal factors. Based 56 official investigation reports more than 10 fatalities, qualitative content was conducted develop modified these accidents, gray correlation causative by calculating degrees. results showed that can be divided into seven levels: government regulations, organizational influence passenger transportation enterprises, unsafe internal operational supervision, preconditions drivers’ acts, proximate causes other driver’s act, moderating affecting accident severity probability. enterprises is most significant accidents. Thus, transport must systematically strengthen their responsibility safety management prevent Accident investigations should begin process determine cause as well likelihood accident.