How long does it take for Linked Cloud to know about the violation?

Vehicle violation in the linkage cloud will be discovered in about three working days or 15 working days.

"Regulations on Handling Traffic Violation Procedures" has corresponding provisions on this:

Article 16 If the facts of traffic violations are clear and a fine should be imposed according to the general procedure, a decision on punishment shall be made within 24 hours from the date of acceptance.

If a motor vehicle driver's license is temporarily withheld, a decision on punishment shall be made within three days from the date of acceptance. The time limit for punishment for causing traffic accidents shall be implemented in accordance with the procedures for handling road traffic accidents of the Ministry of Public Security.

Provisions of relevant laws and regulations on traffic violation handling procedures:

Article 27 If the traffic administrative department of the public security organ fails to receive the temporarily detained vehicle or stranded motor vehicle driver's license after being notified for more than six months, the traffic administrative department of the public security organ may revoke the motor vehicle license plate and driving license, and turn over the vehicle to the financial department in accordance with the regulations.

If a motor vehicle driver's license, motor vehicle number plate and driving license are revoked, the traffic administrative department of the public security organ at or above the county level or equivalent to the same level in the place where the illegal act occurred shall make a revocation decision, make legal documents and serve them on the parties concerned or the owner of the motor vehicle.

Article 28 If the party concerned or the vehicle owner is not present, the legal documents shall be served on the party concerned or the vehicle owner in accordance with the relevant provisions of the Civil Procedure Law within seven days.

Refer to the above? Baidu Encyclopedia-Provisions on Handling Traffic Violations