Wis. Admin. Code Trans § Trans 201.01
Pursuant to authority contained in ss. 84.106, 84.30 and 86.19, Stats., the department of transportation adopts the following rules to apply to signs along and visible from the controlled highways in Wisconsin. Section 84.30, Stats., and these rules apply to the interstate system, federal aid primary or national highway system, and the Great River Road established under 23 USC 148, which are referred to herein as "controlled highways." These rules are so closely associated with the Wisconsin Statutes, and make such extensive reference to s. 84.30, Stats., that it is essential to refer to both these rules and the law in order to apply the controls. This chapter shall be interpreted consistently with the requirements of the 23 USC 131 federal regulations related to outdoor advertising control at 23 CFR Part 750, the agreements between the state of Wisconsin and the U.S. federal highway administration dated June 9, 1961 and March 28, 1972, and with regulations and policies of the U.S. department of transportation implementing a national scenic byways program under 23 USC 162.
Wis. Admin. Code Department of Transportation Trans 201.01
The 1961 Agreement involved application of the Federal Bonus Act (part of the Federal Aid Highway Act of 1958), P.L. 85-381; the 1972 Agreement involves application of the Federal Highway Beautification Act of 1965, P.L. 89-285.