Unknown Author
Andrew Vogt
Joel P. Leisch
Israel. Miśrad ha-taḥburah. Mefaḳeaḥ ʻal ha-taʻaburah
Washington (State). Dept. of Highways.
Thomas J. Foody
J. Devlin
Druyvestein, Johnson & Anderson
D. Pickering
Józef Bartoszewski
New Jersey. Bureau of Safety and Traffic.
Jonathan Reid
Joseph E. Hummer
James A. Bonneson
Carroll J. Messer
American Association of State Highway Officials
Kōnstantinos Zekkos