Abstract
The basic feature of a sketch planning model is the relatively fast processing of a minimal amount of data to provide better than order of magnitude information about a proposed transportation plan. The goal is not a finely detailed analysis of an alternative, but rather an idea of its relative worth as compared to other alternatives on the basis of a range of impacts. Effects are desired, not only at the regional level, but also subregionally, with the level of disaggregation being such that it provides a general, but useful, degree of localization. An approach is developed for distributing travel about a region subdivided.