Okla. Stat. tit. 69, § 69-1698.159: Historic Chisholm Trail Bike Route

State Highway 81 from the Kansas border to the Texas border

shall be designated as the "Historic Chisholm Trail Bike Route".

The cost associated with signage required by this section shall be

provided from private sources and shall include the cost of the

initial erection of signs as well as the cost of potential

replacement or reconstruction of signs. Upon receiving adequate

funding from private sources and after a shoulder lane has been

provided, the Department of Transportation shall cause suitable

permanent markers to be placed upon the highway bearing that name.

Contingent upon the availability of funds, the Department shall

provide a shoulder lane designated for use by bicycle traffic on the

Historic Chisholm Trail Bike Route.