Samenvatting
During the summer months of 1959 the Traffic and Planning Division of the Minnesota Highway Department and a manufacturer of highway sign materials conducted a joint field study of an experimental reflectorized color guidance system installed in the cloverleaf interchange at the intersection of U~ 61 and Minn 36. This is a report of the experimental results of traffic surveys and driver interviews made for the study. A description of the reflectorized system is included.