Transportation in urban areas, with its related environmental and social impacts, is of significant concern for government policymakers and for the urban citizens who need efficient transport systems. This book presents extensive reviews of these systems to devise and then safeguard their operational use, maintenance, safety and security.The continuing requirement for better and more efficient urban transport systems and the need for a healthier environment has added to the increasing international desire for new technologies and developments in this essential field.The variety of topics covered reflects the complex interaction of urban transport systems with their environment and the need to establish integrated strategies.