"Stacking" refers to combining the limits of multiple insurance policies to provide greater coverage for a single claim. In the scenario described, the injured party may have UM/UIM coverage under their own insurance policy, and they may also be covered by UM/UIM coverage provided by other household members' insurance policies. Each of these UM/UIM policies may be stacked to increase the total available coverage to the injured party.
It is important to note that stacking insurance policies is subject to certain limitations and conditions, which can vary depending on the specific jurisdiction and the terms of the insurance policies involved. For instance, some states have "anti-stacking" laws that prohibit or limit the stacking of insurance policies, while other states only allow stacking for certain types of policies or certain types of claims. Additionally, some insurance policies may include specific provisions that prohibit or limit stacking.
It is advisable to consult with a knowledgeable insurance professional or an attorney to determine the specific rules and limitations applicable to stacking insurance policies in your particular jurisdiction and to evaluate your specific situation and options for maximizing available coverage.