Fully-loaded rigs: Question Fully-loaded rigs: Answers Are less likely to roll over than empty rigs. Are more likely to roll over than empty rigs. Are just as likely to roll over as empty rigs. Explanation Fully-loaded rigs are more vulnerable to rolling over than empty rigs because the weight of the cargo gives the vehicles higher centers of gravity. This questions appears in the following tests: Alaska Tank Alaska Combination Arizona Combination Kentucky Combination Louisiana Combination Oklahoma Double Vermont Double Virginia Combination