Abstract
Due to the high incidence of rollover in the accident experience with Michigan double-bottom tankers, a special study of rollover dynamics was done. A dynamic model of the vehicle in the roll plane was formulated for study of roll motions under arbitrary lateral force input time histories. The model confirmed that double-bottom tankers of the current design exhibit a low rollover threshold in comparison to other commercial vehicles; and that certain design changes proposed as a retrofit would effectively eliminate that disparity.