"Reprinted from Traffic Quarterly July 1965.""July 1965.""During the summer of 1963 the authors used fixed-time interval pictures to study traffic characteristics on a short section of Highway 400, Ontario. The purpose of the study was to obtain density-flow relationships, particularly a flux plot of the traffic for all speeds. Unfortunately, no "jams" occurred, so the low-speed (below 30 miles per hour) data on time flows were obtained on the Queen Elizabeth Way at St. Catharines, Ontario. The section on Highway 400 was isolated from merging and diverging maneuvers. The values on the charts represent observations from a short section (900-1, 600 feet) for small intervals of time extrapolated to commonly used measurements of vehicles per hour and vehicles per mile. The flux plots shown herein were derived from approximately 1, 100 observations of each lane."--Page 36
