The Department of Transportation shall issue disabled person parking permits in the form of family placards for use on vehicles that are regularly used by a family that includes more than one person with a disability. All the following apply to placards issued under this section:
(1) The department shall determine the form, size and content of the placards except that the department shall require that the expiration date of a placard be visible when the placard is displayed in the vehicle.
(2) Placards issued under this section shall be valid for a period of eight years from the date of issue. Upon expiration, placards may be renewed in a manner determined by the department by rule.
(3) The department shall not issue or renew a placard under this section unless a licensed physician certifies that the family includes at least two persons with disabilities. [1991 c.741 §4b; 1999 c.91 §5; 2001 c.827 §16; 2005 c.406 §4; 2007 c.70 §334]