David W Schoppert

TEAMING UP FOR SAFE DESIGN AND OPERATION

David W Schoppert, 1965 .

PREDICTING TRAFFIC ACCIDENTS FROM ROADWAY ELEMENTS OF RURAL TWO-LANE HIGHWAYS WITH GRAVEL SHOULDERS

David W Schoppert, 1957 .

SOME PRINCIPLES OF FREEWAY DIRECTIONAL SIGNING BASED ON MOTORISTS' EXPERIENCE

Karl Moskowitz, Albert Burg, David W Schoppert, 1960 .

MOTORISTS REACTIONS TO SIGNING ON A BELTWAY' DISCUSSION

David W Schoppert, Stephen G Petersen, 1967 .