Meet any of the following conditions: 1. Motor vehicle drivers have not purchased compulsory traffic accident insurance;

2. The salvage expenses exceed the limit of compulsory insurance liability;

3, after the accident, the motor vehicle hit and run. Legal basis: Regulations on Compulsory Liability Insurance for Motor Vehicle Traffic Accidents Article 24 The State establishes a social relief fund for road traffic accidents (hereinafter referred to as the relief fund). Under any of the following circumstances, the funeral expenses and part or all of the rescue expenses of the victims of road traffic accidents shall be paid by the rescue fund in advance, and the rescue fund management institution shall have the right to recover from the person responsible for road traffic accidents: (1) The rescue expenses exceed the liability limit of compulsory insurance for motor vehicle traffic accidents; (two) the motor vehicle did not participate in the compulsory insurance of motor vehicle traffic accident liability; (3) A motor vehicle escapes after an accident.