The bill amends the Michigan Vehicle Code to enhance the definitions and regulations surrounding parking privileges for disabled individuals. It broadens the definition of "disabled person" or "person with disabilities" to include additional medical professionals, such as certified nurse practitioners and occupational therapists, who can certify disabilities. The bill specifies the physical conditions that qualify an individual as disabled, including those affecting mobility, lung capacity, and cardiovascular health. It also introduces new provisions for the issuance and renewal of windshield placards, detailing the responsibilities of the Secretary of State in managing these placards and establishing rules for their proper display.

Additionally, the bill implements stricter penalties for the misuse of special registration plates and tabs for persons with disabilities, classifying such misuse as a misdemeanor. It requires that windshield placards display the first letter and last three digits of the disabled person's driver's license or state ID number and mandates that individuals receive notice and an opportunity to be heard before any cancellation or revocation of their placard occurs. The adhesive tab for persons with disabilities must now feature the international wheelchair symbol and is restricted from use on certain vehicles, including those owned by the state or municipalities. Overall, these amendments aim to improve the clarity and enforcement of laws related to parking for individuals with disabilities in Michigan.