Information used in the identification of ATIS and CVO development objectives and performance requirements was obtained from two general sources: First, the literature review working paper and supplement (Dingus, Hulse, Alves-Foss, Confer, Jahns, Rice, Roberts, Hanowski, & Sorenson, 1993) provided background information regarding published reports discussing ATIS and CVO system configurations, functions, and objectives. Second, a series of interviews were conducted with government and private industry members of the transportation community to solicit their views regarding ATIS and CVO development objectives, performance requirements, and related topics. Following are descriptions of the interview participants, procedures and materials, and analyses employed during the conduct of this task.