Evaluation of supplemental shields at railroad crossings

This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program.  It is for informational purposes and may not be suitable for legal purposes., "December 1998.", "OR-RD-99-17"--P. i, "Prepared for Rail Section, Oregon Department of Transportation.", "State Research Project #523.", Includes bibliographical reference (p. 13), Mode of access: Internet from the Oregon Government Publications Collection.
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This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.