Background and Aim: The purpose of this article is to examine the cause and responsibility in the third party compulsory insurance law in Iran and France.
Materials and Methods: The present article is descriptive and analytical, and data collection was used in data collection.
Ethical Considerations: In this article, the originality of the texts, honesty and trustworthiness are respected.
Findings: Compulsory insurance law considers it necessary to verify the relationship of causation in traffic accidents in various cases of damages caused by vehicle accidents. In French law, damages are divided based on the amount of influence that each of the factors have in causing the damage. There must be a causal relationship between the fault or behavior of the victim and the damage caused, which is a condition for the effect on the defendant's responsibility, and sometimes the fault of the victim causes the disconnection of the causal relationship between the damage and the action of the harmful agent and causes the victim to be released from All damages shall be denied.
Conclusion: Considering the role of various factors in the occurrence of traffic accidents, such as lack of necessary attention on the road, vehicle defects and the responsibility of the car manufacturer for the driver's lack of caution, the relationship of causation in establishing fault in traffic accidents provides a more accurate expression of responsibility in such accidents.