The complex problem of metrication of highway design, construction and maintenance has been the subject of a number of studies and pilot projects carried out by the Federal Highway Administration (F.H.W.A.) of the United States and the Roads and Transportation Association of Canada. Through a research grant, the FHWA of the U.S.A. assigned the Ohio Department of Transportation, the Illinois Department of Transportation and the Oregon Highway Division to design, construct, and maintain these metric projects. The author has reviewed the experience and conclusions of these studies and the problems encountered in the pilot projects relative to the design, survey, contracting, construction, signing, and public reactions to the metrication process. In the conclusions to this review, the author questions some of the recommendations of these studies, specifically in the area of curvature and station definition, notation convention, and the concept of dual signing. In these and other areas recommended guidelines for highway metrication are proposed.
Finally, the author presents a set of equations and computer generated tables for highway design and layout in metric incorporating the flexibility of 10, 20, 40, and 100 metre station and curvature definition.
| Identifer | oai:union.ndltd.org:pdx.edu/oai:pdxscholar.library.pdx.edu:open_access_etds-3883 |
| Date | 01 January 1978 |
| Creators | Al-Fadhli, Taher A. |
| Publisher | PDXScholar |
| Source Sets | Portland State University |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | Dissertations and Theses |
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