July 12
| 1947 | By agreement with the State Department, PRA undertakes to supervise the highway program authorized by May 22 legislation to help Turkey improve its highways. The legislation authorized $5 million for purchase of highway equipment, materials, supplies, and contractual services. The Turkish Government agreed to provide adequate funds for carrying out the road program. |
| 1954 | President Dwight D. Eisenhower's "Grand Plan" for a properly articulated highway network, including the Interstate System, is unveiled at the Governors Conference, Bolton Landing, NY, by Vice President Richard Nixon (a death in the family kept the President from attending). The plan calls for a $50-billion highway program over 10 years."Our highway net is inadequate locally, and obsolete as a national system." |
| 1956 | AASHO adopts the initial geometric design standards for the National System of Interstate and Defense Highways (approved by BPR on July 17). Revisions are adopted April 12, 1963, October 24, 1963, December 1988, and July 1991. (See August 1, 1945.) |
