Finding the unexpected in the everyday.
August 14, 1957 The Administration Committee of AASHO (now known as AASHTO) approved the now-familiar shield used on the Interstate Highway System. The committee made this decision in the wake of several months during which the association’s U.S. Route Numbering Committee sifted through and evaluated dozens of shapes and sizes for a possible route marker... Continue Reading →
January 22, 2008 The Arizona Department of Transportation (ADOT) launched a test program for travel times on freeways in the Phoenix metropolitan area. (The freeway system in the vicinity of Arizona’s capital is one of the largest and fastest-growing networks of its kind in the entire United States.) ADOT’s pilot project involved using a select... Continue Reading →
Transportation History 