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Railroad-highway grade crossing signal visibility improvement program

Author: W H Andrews; G A Armstrong; T L Bowers; United States. Federal Highway Administration.; Oak Ridge National Laboratory.
Publisher: McLean, Va. : Federal Highway Administration ; Springfield, Va. : Available through the National Technical Information Service, 1987.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Summary:
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  Read more...
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Additional Physical Format: Online version:
Andrews, W.H.
Railroad-highway grade crossing signal visibility improvement program.
McLean, Va. : Federal Highway Administration ; Springfield, Va. : Available through the National Technical Information Service, 1987
(OCoLC)855530421
Material Type: Government publication, National government publication
Document Type: Book
All Authors / Contributors: W H Andrews; G A Armstrong; T L Bowers; United States. Federal Highway Administration.; Oak Ridge National Laboratory.
OCLC Number: 17000939
Notes: Cover title.
Vol. III: Hardware and users guide, has misprint v. II on cover.
"FHWA/RD-86/186."
"FHWA/RD-86/188."
"July 1987."
Description: volumes : illustrations ; 28 cm
Contents: v. 1. Final report --
v. 2. Data and hardware details --
v. 3. Hardware user's guide.
Responsibility: [W.H. Andrews, G.A. Armstrong, T.L. Bowers].

Abstract:

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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Primary Entity

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