RCW 47.12.242: "Advance right-of-way acquisition" defined.

The term "advance right-of-way acquisition" means the acquisition of property and property rights, generally not more than ten years in advance of programmed highway construction projects, together with the engineering costs necessary for such advance right-of-way acquisition. Any property or property rights purchased must be in designated highway transportation corridors and be for projects approved by the commission as part of the state's six-year plan or included in the state's route development planning effort.