Legal analysis: There is a time limit for the social relief fund for road traffic accidents to advance the rescue expenses of the victims. The relief fund generally advances the rescue expenses of the victims within 72 hours from the time of receiving the rescue. In special cases, the medical institution will give a written explanation for the rescue expenses exceeding 72 hours. Specifically, it should be accounted for according to the charging standard approved by the price department of the place where the motor vehicle road traffic accident occurred. Sources of social assistance fund for road traffic accidents: 1. Funds drawn according to a certain proportion of the insurance premium of compulsory motor vehicle traffic accident liability insurance (hereinafter referred to as compulsory traffic insurance), financial subsidies given by local governments according to the amount of business tax paid by insurance companies for compulsory traffic insurance, fines for owners and managers of motor vehicles who fail to take compulsory traffic insurance according to regulations, fruits of the assistance fund, funds recovered from those responsible for motor vehicle road traffic accidents by the assistance fund management institutions according to law, social donations and other funds.

legal basis: article 75 of the road traffic safety law of the people's Republic of China * * * medical institutions shall promptly rescue the injured in traffic accidents, and shall not delay the treatment because the rescue expenses are not paid in time. If the vehicle involved in the accident participates in compulsory third-party liability insurance for motor vehicles, the insurance company shall pay the rescue expenses within the limit of liability; If the rescue expenses exceed the limit of liability, and they do not participate in compulsory motor vehicle third-party liability insurance or escape after the accident, the social assistance fund for road traffic accidents shall advance part or all of the rescue expenses in advance, and the social assistance fund management institution for road traffic accidents shall have the right to recover from the person responsible for the traffic accident.