Missouri Revised Statutes Title XIX. Motor Vehicles, Watercraft and Aviation § 302.186. Active military duty, expiration of driver’s license during, renewal without examination, when--rulemaking authority

1. Notwithstanding any other law, if the driver's license of any person expires while such person is on active duty in the Armed Forces of the United States, the license of such person shall be renewable, without examination, at any time prior to the end of the sixth month following the discharge of such person from the Armed Forces, or within ninety days after reestablished residence within the state, whichever time is sooner. Missouri residents on active duty in the Armed Forces of the United States or any dependent thereof age twenty-one or older residing outside the state of Missouri or the United States may renew their driver's license by mail.

2. The department of revenue may promulgate rules necessary to implement the provisions of this section. Any rule or portion of a rule, as that term is defined in section 536.010, that is created under the authority delegated in this section shall become effective only if it complies with and is subject to all of the provisions of chapter 536 and, if applicable, section 536.028. This section and chapter 536 are nonseverable and if any of the powers vested with the general assembly pursuant to chapter 536 to review, to delay the effective date, or to disapprove and annul a rule are subsequently held unconstitutional, then the grant of rulemaking authority and any rule proposed or adopted after August 28, 2011, shall be invalid and void.