Traffic Signs and Signals ITE Presidents -1960s MUTCD 1961 Edition The 1961 Edition of the Manual on Uniform Traffic Control Devices (MUTCD) was the first new edition to come out since 1948. The 1961 edition "provided greater uniformity by eliminating many of the alternatives permitted in the previous edition and by replacing them with a single standard."3 The Bureau of Public Roads also required that all traffic control devices used on federalaid highways should conform to the new manual, marking the first time compliance with MUTCD standards was tied to receiving federal highway funds. Although the National Joint Committee wanted to minimize changes in the appearance of traffic control devices, the 1961 MUTCD had several important changes in content and format: * Signs: Though no new symbols were introduced, the 1961 MUTCD featured several changes to existing signs, including increasing sign sizes. * Pedestrian Signals: Required pedestrian signals to be rectangular in shape and display messages "Walk" in green or white, and "Don't Walk" in red and orange. * Markings: Established a solid yellow line to the right of a white center line as the standard for marking no-passing zones. Edward G. Wetzel 1959-1960 Alger F. Malo 1960-1961 Gordon K. Gravelle 1962 J. Al Head 1963 Fred W. Hurd 1964 Signs from the 1961 MUTCD.4 w w w .i t e.or g May 2020 23http://www.ite.org