As used in this Chapter, the following terms shall have these prescribed meanings:
Physically driving or operating a motor vehicle.
A person is in an "intoxicated condition" when he/she is under the influence of alcohol, a controlled substance or drug, or any combination thereof.
Includes the definition of Law Enforcement Officer in Subdivision (17) of Section 556.061, RSMo., and military Police Officer conducting traffic enforcement operations on a Federal military installation under military jurisdiction in the State of Missouri.