Legal analysis: the compulsory measures of traffic police are as follows: 1, temporarily suspending or revoking motor vehicle driver's license; 2. Detain motor vehicles and non-motor vehicles; 3. detention; 4. If the fine is not paid at the due date, a fine of 3% of the fine amount will be added daily; 5. Apply to the people's court for compulsory execution.

Legal basis: Road Traffic Safety Law of the People's Republic of China.

Article 109 If a party fails to perform the decision on administrative punishment within the time limit, the administrative organ that made the decision on administrative punishment may take the following measures: (1) If the party fails to pay the fine within the time limit, it shall be fined at 3% of the amount of the fine every day; (two) apply to the people's court for compulsory execution.

Article 110 If a traffic policeman performing official duties thinks that the road traffic violator should be punished by withholding or revoking the motor vehicle driver's license, he may first detain the motor vehicle driver's license and hand it over to the traffic management department of the public security organ for handling within 24 hours.

Article 111 The administrative punishment for detention in violation of the provisions of this Law shall be decided by the county, municipal public security bureau, public security sub-bureau or public security organ equivalent to the county level.

Article 112 When the traffic administrative department of the public security organ detains a motor vehicle or a non-motor vehicle, it shall issue a certificate on the spot and inform the parties concerned to handle it at the traffic administrative department of the public security organ within the prescribed time limit.