• “Additional” no-fault laws are laws applicable in some states that allow Personal Injury Protection (PIP) coverage to be added to auto insurance policies without restricting the injured party’s right to file a tort claim. In some of these “add-on” states, the purchase of these personal injury (PI) or “no-fault” insurances is mandatory. In other cases, the purchase is made at the choice of the insured, although insurers are required to offer them.