National Origin-Destination study. Consulting services consisted of: evaluation of the previous multimodal O-D study that was carried out in 1979; evaluation of the National Traffic Counting Program; development of proposals for improvements and new procedures for the Traffic Counting Program; revision of the specification of the National Road Side Survey involving a total of 256 survey stations and the analysis of approximately 500,000 recorded interviews; computer aided estimation of future traffic, formulation and testing of transportation management plans.