Since parents put their faith in the SB drivers and school divisions to transport their children to and from school safely and these collisions tend to attract a lot of media attention, the safety of these vehicles is a major concern not only for the authorities concerned but also for the general public. To ensure the safety of SB operations, it is necessary to identify the factors that contribute significantly to the likelihood or severity of these collisions. We find that violations of SB driver tend to increase crash severity whereas non-SB driver errors tend to decrease crash severity. Other factors that increase crash severity are frontal primary direction of force, head-on collision, female driver, unrestrained drivers, foggy/smoky weather, rural area, and traffic signal, whereas the factors that decrease crash severity are senior drivers, and slushy/snowy/icy road surface.
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