This volume gives an overview on new theoretical approaches on computer-aided methods for strategic and operational planning in public mass transit. Interesting results in scheduling theory are shown, using procedures for solving combinatorial problems with more complex structures. Experiences in the application of specific software tools are also presented. Readers of this book obtain detailed information on the current developments in scheduling theory and in solving such problems in practice. The papers of this volume describe the most important steps of the complete process on planning and operational control in public mass transit.