(a) On and after July 1, 2015, the secretary of transportation shall not place any signs commemoratively designating any highway, bridge, interchange or trail until the secretary has received sufficient moneys from gifts and donations to reimburse the secretary for the cost of placing such signs and an additional 50% of the initial cost to defray future maintenance or replacement costs of such signs. The secretary of transportation may accept and administer gifts and donations to aid in obtaining and installing suitable signs.

(b) The provisions of this section shall not apply to Kan. Stat. Ann. § 68-10,119, 68-10,121, 68-10,122, 68-10,123, 68-10,124, 68-10,125, 68-10,126, 68-10,127, 68-10,128 and 68-10,129, and amendments thereto.