20. a. Any rules or regulations adopted by the commissioner concerning outdoor advertising that are in effect prior to the effective date of this act shall remain in effect until they are revised or superseded by regulations adopted by the commissioner pursuant to this act.
b. Following the effective date of this act and prior to the adoption of regulations pursuant to this act, the commissioner shall have the power and authority to waive or suspend enforcement of any existing rule or regulation which the commissioner deems inconsistent with the provisions of this act.