The document describes an evaluation of an automated "Transit Information System" (TIS), a variant of the "automatic vehicle monitoring" (AVM) concept. With TIS, bus transit patron boardings and exits are recorded and transmitted by radio, along with information on time and bus location, to a central mini-computer for storage and later off-line use in service evaluation and planning. This TIS evaluation is based on a General Motors prototype in operation in Cincinnati on selected Queen City Metro routes. It covers the prototype system's operations to date as well as a potential updating and expansion of such a system to all routes. While the evaluation is focused on the Cincinnati setting and experience, some broader conclusions are drawn. Similarly, although the General Motors prototype provides the data used in the evaluation, findings are applicable to similar TIS systems which might be offered by other suppliers. The evaluation emphasizes the economic feasibility of the TIS concept through a cost-benefit approach. Technological feasibility and institutional considerations are also considered.