A conference was held in San Antonio, Texas, April 13-16, 1980, to focus attention on energy resources used for domestic transportation and the formulation of public policy related to contingency planning in the transportation life of the nation. This volume contains the proceedings of the conference. Part I takes note of the conference's aims and directions and includes the keynote addresses that dealt with overviews of energy issues and resource availability at home and abroad. Part 2 summarizes the conference's findings and recommendations and represents the distillation of the views expressed in the workshops and resource papers. Part 3 reports on the session and workshop discussion. Part 4 includes the resource materials and papers that were prepared for the conference and have been edited for inclusion in this report. Part 5 lists the participants and their affiliations.