Legal analysis:

If the parties have objections to the determination of the road traffic accident, the parties refuse to sign the road traffic accident determination form, or the parties do not agree to mediation. If one party does not sign, the traffic police can issue an accident determination letter to the other party without affecting the validity of the accident determination letter. For a traffic accident liability letter, it does not matter whether the parties involved sign it or not. It does not affect anything. If you have any objection to the traffic accident determination certificate, you can apply for review. The traffic management department of the public security organ shall promptly prepare a traffic accident determination certificate based on the on-site inspection, inspection, and investigation of the traffic accident and the relevant inspection and appraisal conclusions, as evidence for handling the traffic accident. The traffic accident determination letter shall state the basic facts, causes and responsibilities of the parties involved in the traffic accident, and shall be served to the parties concerned.

Legal basis: "Regulations on Procedures for Handling Road Traffic Accidents" Article 60 The traffic management department of the public security organ shall determine the liability of the party concerned based on the role of the party's behavior in the occurrence of the road traffic accident and the severity of the fault. responsibility.

(1) If a road traffic accident occurs due to the fault of one party, the party shall bear full responsibility;

(2) If a road traffic accident occurs due to the fault of two or more parties , according to the role of their actions in the accident and the severity of their faults, they shall bear primary responsibility, equal responsibility and secondary responsibility respectively;

(3) None of the parties was at fault for causing the road traffic accident and it was a traffic accident. In the event of an accident, neither party will be held responsible.

If one party intentionally causes a road traffic accident, the other party is not responsible.

Situations in which the car is fully responsible:

1. Rear-end collision with the vehicle in front (the vehicle behind will bear full responsibility for a rear-end traffic accident caused by the vehicle behind hitting the vehicle in front of the vehicle);

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2. Accidents occur when changing lanes;

3. Traffic accidents occur when reversing or rolling away (a rear-end traffic accident caused by the vehicle in front reversing or rolling away and hitting the vehicle behind, the vehicle in front bears full responsibility for the accident) );

4. Collisions and scratches occur when driving from off-road or non-motorized lanes into motorized lanes;

5. Turning vehicles on green lights or at intersections without signal lights do not yield to straight vehicles. ;

6. Vehicles entering wake-up intersections fail to yield to vehicles exiting or driving in roundabouts;

7. Accidents occur across the road center solid line or isolation solid line;< /p>

8. Driving in the opposite direction (driving in the opposite direction is a violation of road traffic safety laws and regulations);

9. A traffic accident occurs when overtaking on the right;

10. Overtaking the front A traffic accident occurs when a vehicle makes a normal U-turn, left turn, or overtakes;

11. A traffic accident occurs when running through a red light;

12. Areas with signs and markings prohibiting U-turns are at crosswalks , traffic accidents caused by U-turns on bridges, steep slopes, and tunnels;

13. Collision with vehicles that can be suspended or parked according to law;

14. Traffic accidents caused by opening and closing car doors;

16. A traffic accident occurs on one side.