This monograph updates and revises research contained in an earlier work entitled Zoning Applied to Parking (1947) and examines the topic of zoning and traffic circa 1952. In this study, a more careful analysis of zoning for off-street loading requirements is made and other areas in which zoning might be used to improve traffic operations and provide increased traffic safety are discussed. Chapters focus on a background of zoning applications to traffic; zoning and parking; zoning and loading/unloading; zoning and general land use; and zoning and roadside signs. A variety of tables, figures, and graphs present data collected.