Notwithstanding the provisions of K.S.A. 8-1558, and amendments thereto, the Kansas turnpike authority, as defined in K.S.A. 68-2001, and amendments thereto, by resolution, may fix maximum and minimum speed limits for vehicles upon a highway or any part thereof under the authority's jurisdiction, which speed limits shall be effective when appropriate signs giving notice thereof are erected upon such highway or any part thereof.
K.S.A. 8-1560b