Wis. Stat. § 110.21: Education and training related to motor vehicle emissions.

The department and its contractors under s. 110.20 (8) (am) shall conduct a program of public education related to the motor vehicle emission and equipment inspection and maintenance program established under s. 110.20 (6). The program under s. 110.20 (6) may include a pilot project of motor vehicle emissions inspections for those owners who elect to present their motor vehicles for inspection.