File:America's Highways 1776–1976 - page 321.png
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English: From the beginning, the Office of Public Roads included a group of men to develop new techniques through experiment and research. Historically, this activity has involved a strong element of “let’s try it and find out” as illustrated in this early bituminous macadam pavement experiment. Today’s broad program of research and development dealing with problems of safety, traffic management, environmental protection, materials, structures, and maintenance uses modern, scientific techniques in searching for solutions. |
| Date | |
| Source | https://en.wikisource.org/wiki/Page:America%27s_Highways_1776%E2%80%931976.djvu/327 |
| Author | Federal Highway Administration |
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This image is a work of a United States Department of Transportation employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. | 
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 18:30, 3 January 2023 | | 2,189 × 1,457 (4.62 MB) | Sp1nd01 (talk | contribs) | Uploaded a work by Federal Highway Administration from https://en.wikisource.org/wiki/Page:America%27s_Highways_1776%E2%80%931976.djvu/327 with UploadWizard |
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