These guidelines were developed by the bookmobile community that has met in Columbus, Ohio, since 1985 for their annual conference. The guidelines comprise the collaborative effort of hundreds of conference participants and representatives from 79 libraries throughout the United States and Canada, who discussed the guidelines in regional and state sessions and/or tested all or part of the guidelines under actual service conditions. Designed to serve as baselines against which administrators can consider the effectiveness of bookmobile programs, these guidelines are not standards, but professional advice about bookmobile service. They are presented in six sections, which discuss in detail: (1) working specifications for a bookmobile vehicle, including information about types and brands of tires and batteries, as well as information about auxiliary power units and safety equipment; (2) scheduling, including how to choose appropriate service hours and duration of each stop; (3) library collection development, including policy, personnel, and the variety of the collection; (4) marketing and publicizing the service, encouraging consistency with the library system's program, and involving the community in the program's development; (5) staffing the bookmobile, including suggestions for training in communications skills, driving, and general safety; and (6) management, including issues of funding, maintenance of the vehicle, and integration into the library system. (SD)