Where any portion of a road, street, or highway is a properly marked school zone, as indicated with appropriate warning signs placed in accordance with the latest edition of the Manual on Uniform Traffic Control Devices, and a reduced speed limit as properly posted, shall be in effect during certain times due to the presence or potential presence of school children, no person shall drive any vehicle upon that portion of the highway which is the school zone in excess of the reduced speed limit so posted when the reduced speed limit is in effect. Violation of the posted reduced speed limit in the school zone shall result in the doubling of the appropriate fine.
Okla. Stat. tit. 47, § 11-806.1