A bill to amend title 23, United States Code, to improve the control of outdoor advertising in areas adjacent to the Interstate System, the National Highway System, and certain other federally assisted highways, and for other purposes.

Repeals provisions permitting outdoor advertising signs, displays, and devices (signs) to be erected and maintained within 660 feet of the nearest edge of the right-of-way within areas adjacent to the Interstate and primary highway systems which are in unzoned commercial or industrial areas as may be determined by agreement between the several States and the Secretary of Transportation.

Provides that a State shall not be considered to have made provision for effective control of the erection and maintenance of signs along the Interstate and primary systems: (1) unless it maintains and annually submits to the Secretary an inventory of all signs in the State for which the effective control is required, including a specification of whether each sign is illegal, nonconforming, or conforming under State law; and (2) if it carries out or permits the removal of vegetation in, or other alteration of, certain right-of-ways for the purpose of improving the visibility of any sign located outside the right-of-way.

Requires such State inventory to identify each sign that is located along a highway on the Interstate or Federal-aid primary system designated as a scenic byway.