This volume addresses, with scientific rigor and also interprets in an original way, the main issues concerning the study and management of road traffic, with particular focus on urban and suburban motor vehicle traffic, under the different functional conditions specific to highways, two-lane roads, and urban streets, as well as those related to traffic regulation at intersections. The work, stemming from the authors’ research, teaching, and professional experience, is aimed at training transportation engineers but can also serve as a useful and sufficiently detailed resource for in-depth studies on the subject and sector-specific analyses.