How many years must proof be kept for financial responsibility when driving?

In most states in the U.S., proof of financial responsibility, such as insurance documents, must be kept for a minimum of three years following an accident or a violation. However, specific requirements can vary by state, so it's important to check local regulations. Additionally, some states may have longer retention periods for certain types of records. Always consult your state's Department of Motor Vehicles or equivalent authority for precise guidelines.