Advanced Methods for Mobile Retroreflectivity Measurement of Pavement Marking
Uniformity in St. Louis county -- Patience and progress
Progress in learning meanings of symbolic traffic signs
Drivers' understanding of road traffic signs
Changes in traffic-control-device standards
Use of motor vehicle citations in Traffic engineering analysis
Sign standards for interstate highway system
Electronic control of motor vehicles
Effect of letter width and spacing on night legibility of highway signs
Protection from glare on highways
G.E. volume-density controller
Nomograph for urban traffic signal priorities
Chicago's new welded street signs
Installing raised traffic markers
Durability of road marking materials
Zur Theorie der Leiteinrichtungen am Strassenrand
Detroit's sign shop goes modern