Relating to: registration plate concealment devices and providing a penalty.

SB 66 prohibits the use of devices designed to conceal, obstruct, or alter vehicle license plates, such as mechanical switches, moving covers, or altered plates that obscure numbers. It bans possessing, selling, installing, or using these devices and requires impounding vehicles equipped with them (with costs paid by the owner for towing/impoundment). Violations carry penalties of up to $1,000 in fines, 90 days in jail, or both. This law directly affects vehicle owners who might attempt to obscure license plates, and it became effective under 2025 Wisconsin Act 37.