Mo. Rev. Stat. § 302.769: Contingent effective date.

The repeal and reenactment of section 302.700 and the enactment of section 302.768 of this act* shall become effective on the date the director of the department of revenue begins accepting commercial driver license medical certifications under sections 302.700 and 302.768, or on May 1, 2013, whichever occurs first. If the director of revenue begins accepting commercial driver license medical certifications under sections 302.700 and 302.768 prior to May 1, 2013, the director of the department of revenue shall notify the revisor of statutes of such fact**.