In the scenario described, determining fault in an accident involving an illegally parked car and a refrigerated truck would depend on various factors, including the specific traffic laws and regulations in the jurisdiction where the incident occurred, as well as the circumstances surrounding the accident. In general, the driver who is found to have violated traffic laws or regulations, such as illegal parking or improper backing, may be held at fault for the accident. However, it's important to consider the concept of contributory negligence, which means that both parties involved in the accident may share some degree of fault. Additionally, the presence of the obviously refrigerated truck may introduce additional considerations related to visibility and awareness. To determine fault in this situation, it would be advisable to consult with legal and insurance professionals who are familiar with the specific laws and regulations applicable to the location of the accident. It's also important to gather as much evidence and documentation as possible, including witness statements, photographs of the scene, and any relevant traffic citations or police reports. Ultimately, the determination of fault in such a scenario would likely involve a thorough investigation and analysis of the circumstances by legal and insurance experts.