Why Do License Plates Fall Off When Wading Through Water?

1 Answers
AndresRose
07/29/25 7:34pm
When a vehicle drives on a waterlogged road, water hits the bumper and surges upward upon encountering resistance, eventually squeezing into the gap between the license plate and the bumper. This means the license plate is subjected to an outward pushing force. As the vehicle moves forward, the license plate also faces resistance from the water coming from the front. Under the pushing force, the license plate is pried outward, while under the resistance, it is pressed back toward the vehicle body. This repeated action causes a license plate secured with only two screws to sway back and forth and eventually fall off. Additional Information: 1. Number of License Plate Fasteners: According to the "Safety Technical Conditions for Motor Vehicle Operation," each license plate of a newly manufactured motor vehicle should have four installation holes. Metal license plates should be equipped with fasteners that meet the GA804 requirements, unless vehicle conditions prevent their installation. Special fasteners for motor vehicle license plates should be used, ensuring they are complete and securely installed. 2. Replacing a License Plate: Currently, the Municipal Vehicle Management Office and its branches have adopted a "one-window" service model. At any service window of the Municipal Vehicle Management Office and its branches, vehicle owners can complete the license plate replacement process by presenting their ID card. They can choose to pick up the new license plate in person or have it mailed to their home.
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