Abstract
The consequences of vehicle interactions, collisions, with objects and other roadside features depend on many factors such as vehicle speed, mass and rigidity; object dimensions, mass and strength; the number of vehicle occupants, their physical condition and age and whether or not occupant restraint systems are used. In order to estimate the relative safety of a variety of roadside configurations and hazard characteristics the Roadside Hazard Simulation Model (RHSM) was developed for Transport Canada in the late 1970's primarily as an efficient tool for comparing various roadside designs and obstacles over a wide range of encroachment conditions. Twenty simulation runs were made with RHSM Version 6 covering 10 terrain and roadside object conditions for two vehicle sizes. The simulation results show that the occupants of small vehicles suffer higher probability of injury/fatality than do occupants of large vehicles when they crash with roadside objects such as poles and barriers.
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