The Federal Highway Administration (FHWA) estimates that there are more than 58 million traffic signs worth $6 billion on the nationa#39;s roadsides, or an ... in January 1927 its Manual and Specifications for the Manufacture, Display, and Erection of U.S. Standard Road Markers and Signs (3). ... Seventeen highway safety program standards were developed to assure the orderly implementation of the act (5).
Title | : | Maintenance Management of Street and Highway Signs |
Author | : | Richard A. Cunard |
Publisher | : | Transportation Research Board - 1990-01-01 |
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