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Rollover Accidents account for almost 50 percent of fatalities that occur in sport utility vehicles, pickups and minivans, such that increased attention is being paid to these types of accidents. This paper discusses the common types of situations that lead to vehicle rollover of multipurpose passenger vehicles, and the mechanisms that precipitate these situations. Techniques to reconstruct the actual rollover process are presented, and examples are provided to illustrate common rollover trajectories. Parameters that affect variations in these trajectories are discussed. For example, the spacing or distance traveled between touch downs can vary substantially. Identification of these distances is necessary to accurately estimate vehicle rollover speeds, number of rolls and severity of each roll.