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 Few studies has been done on angle crashes involving heavy vehicles. Therefore,

this study will contribute to advancing knowledge in this field. In addition, this
study provides road safety professionals with information on the relative

strengths and weaknesses of the following statistical models: binary logit,

skewed logistic (Scobit) and random parameter logit.

Overall, this thesis has explored original research to extend the literature involving heavy-
vehicle crashes. The results are based on exploratory studies which highlight the importance

of crash location, and type of collision (angle of crash) and the influence of socio-

demographic characteristics on road user injury severity in heavy-vehicle collisions.

6.3 Future Research
This thesis presents several avenues for future study. The following are recommended as

potential subjects for future studies.

 In the first study, only single-vehicle crashes involving heavy vehicles at

intersections and mid-blocks of urban areas are considered. To extend this
research, heavy-vehicle crashes involving single, double and multiple vehicles

could be investigated. Furthermore, a comparison of crashes involving heavy
vehicles in rural and urban areas could be considered.

 In the second study, road-user injury severity levels in vehicle collisions
involving at least one heavy vehicle in Victoria were considered and analysed.

To extend this research, heavy-vehicle crashes involving single and two vehicles
could be separately investigated. In addition, more research should be conducted

to examine the influence of neighbourhood socio-demographic characteristics on

heavy-vehicle crash frequency. Studies of crashes involving other road users or
other vehicle types could also be considered.

 In the third study, occupant injury severity levels in two-vehicle angle collisions

involving at least one heavy vehicle in Victoria were considered and analysed.

Heavy-vehicle crashes involving single and multiple vehicles could be
investigated as an extension of this research. In addition, a comparison of

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