Car accident law in the U.S. revolves around proving negligence to determine liability, where the at-fault party must compensate for damages like medical bills, lost wages, and property damage. Each state has its own insurance requirements, with some following a no-fault system where you claim from your own insurance regardless of who caused the accident, and others adhering to a fault-based system where you claim against the responsible party's insurance. There's a statute of limitations for filing claims, typically ranging from two to four years, depending on the state. Comparative negligence laws in many states adjust compensation based on each party's degree of fault. Reporting accidents to authorities is mandatory under certain conditions, and consulting with a personal injury lawyer can be beneficial to navigate these laws and secure fair compensation.