Railroad-highway Grade Crossing Signal Visibility Improvement Program, Vol. II
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Page : pages
File Size : 28,95 MB
Release : 1987
Category : Railroad crossings
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Author :
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Page : pages
File Size : 28,95 MB
Release : 1987
Category : Railroad crossings
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Author : William H. Andrews
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Page : 96 pages
File Size : 20,81 MB
Release : 1987
Category : Railroad crossings
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Author : W. H. Andrews
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Page : pages
File Size : 32,54 MB
Release : 1987
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Author : W. H. Andrews
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Page : 98 pages
File Size : 24,81 MB
Release : 1987
Category : Railroad crossings
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Volume 1 documents the methodology, developments, and findings of the two-year study. Among the significant results of this project are: (1) a new set of crossing signal visibility specifications based on widely accepted definitions of motorists' requirements and a demonstration that currently available signals exceed these specifications when properly maintained; (2) the evaluation of seven alterations to standard crossing signal design and operation with respect to performance improvement and maintenance requirements--several of these modifications offer attractive cost/benefit attributes and are recommended for implementation; and (3) the development and evaluation of three tools of potential value to signal maintenance crews: an alignment scope to aid in aiming of the signal for maximum effectiveness, a signal focusing tool to aid in the critical positioning of the signal lamp with respect to the reflector, and a signal flux meter for measuring the light output of crossing and traffic signals--all of these tools were proven effective and would be useful to a conscientious maintenance team. The prototype signal hardware underwent rigorous laboratory, environmental, and field tests. The maintenance tools were evaluated under laboratory conditions. Vol. III is intended to ba a stand-alone handbook for potential users of the project's developments.
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Page : pages
File Size : 11,47 MB
Release : 1987
Category : Railroad crossings
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Page : 32 pages
File Size : 32,38 MB
Release : 1988
Category : Highway research
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Author :
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Page : 120 pages
File Size : 36,12 MB
Release : 1990
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Author : United States. Superintendent of Documents
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Page : 1130 pages
File Size : 33,65 MB
Release : 1979
Category : Government publications
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February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
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Page : 336 pages
File Size : 31,33 MB
Release : 1992-07
Category : Government publications
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Author : United States. National Highway Traffic Safety Administration
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Page : 556 pages
File Size : 15,43 MB
Release : 1970
Category : Traffic safety
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