230.41(1)No person shall alter a vehicle in such a way as to render ineffective a safety device installed on the vehicle.

230.41(2)Notwithstanding subsection (1), a person may alter a vehicle so as to render ineffective a safety device installed on the vehicle if the alteration is certified in writing by the manufacturer of the safety device or an engineer as affording protection equal to or greater than the protection afforded by the safety device.

230.41(3)An operator shall not use, and an employer shall not permit to be used, a vehicle if the vehicle has been altered so as to render ineffective a safety device installed on the vehicle.

230.41(4)Subsection (3) does not apply where the alteration has been certified in writing by the manufacturer of the safety device or an engineer as affording protection equal to or greater than the protection provided by the safety device.