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A study of selection of yellow clearance intervals for traffic signals,
by Robert S. Jenkins.

APA Citation

Michigan. Dept. of State Highways. (1969). A study of selection of yellow clearance intervals for traffic signals. .

MLA Citation

Michigan. Dept. of State Highways. A Study of Selection of Yellow Clearance Intervals for Traffic Signals. , 1969.

Warning: These citations may not always be complete (especially for serials).