Abstract
Run-Off-Road (ROR) crashes have always been a serious safety concern around the world as they account for a large number of fatal crashes and fatalities each year. Running off the road may occur as an aftermath of single vehicle accident or any other incidents. Single vehicle ROR accident results in either overturning on the shoulder or hitting off road objects. Accident data analysis shows that in Bangladesh, more than 21% overturning accident involves heavy trucks. What may be the factors behind these accidents? Is it due to the driver performance only or is due to other factors? To find out the answer of the question analytically, a rollover model has been developed which correlates special vehicle loading features such as loading width, height and load shifting with overturning accident in terms of rollover threshold. This paper highlights the model development process and model analysis results.
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