DEVELOPMENT OF A BUS OPERATING COST ALLOCATION MODEL COMPATIBLE WITH UMTA URBAN TRANSPORTATION PLANNING SYSTEM MODELS.

The model differs from the traditional ones by separating costs into fixed and variable components and by using multiple-step functions that reflect the increments of costs or savings generated through changes in the number of employees required to operate the bus system. The model is based on an extensive analysis of the budget data of a large bus operator (the Southern California Rapid Transit System), and provides an example of how a model can be developed for any size of operation if records are maintained on a reasonably detailed budgeting level. The model was developed to be compatible with the UMTA Transportation Planning System (UTPS) models, and can be used both to assist in evaluating alternative long-range transit networks as well as an effective short-range planning and costing tool.