Traffic regulation at street crossings and plazas
New methods of traffic regulation in Essen, Germany
Space required in parking of passenger automobiles
Light signals for traffic regulation
Quantitative comparison of traffic regulation plans for multiple street intersections
Experience regarding automatic train control
New traffic ordinance of Berlin
New street traffic policy in Great Britain
New Austrian Traffic Regulations
Traffic regulation at railroad station and cathedral square in Cologne
Traffic exhibits at German building exhibition, Berlin 1931
European conference for highway traffic in Geneva
Platzgestaltung und Verkehrsregelung
Das DVL-Gleitwinkelsteuer (Bauart W. Huebner)
Die verkehrspolizeilichen Aufgaben und Massnahmen
Traffic development and control
Ueber neuere englische Arbeiten zur Frage des Leitwerkschuettelns
Problems of traffic police in rural towns
Bedeutung und Zukunft des Radfahrverkehrs
Traffic, parking and garage problems encountered in cities