Technical Reports

Potential Means of Cost Reduction in Grade Crossing Automatic Gate Systems, Volume II: Improved Gate Arm Concepts for Railroad/Hiqhway Grade Crossings

  • 01
  • Feb
  • 1977
AUTHOR: FEDERAL RAILROAD ADMINISTRATION
OFFICE: RPD
SUBOFFICE: RPD-30
REPORT NUMBER: DOT/FRA/ORD-77/06.II
KEYWORDS: Grade Crossing Protection; Automatic Gates; Impact Absorbing Gate Arms
ABSTRACT: This report, Volume II of a two-volume study, examines the potential for reduction of the cost of installing and maintaining automatic gates at railroad-highway grade crossings. It includes a review of current practices, equipment, and standards; consideration of modification of existing specifications to permit use of alternative technologies: generation of design concepts for new gate systems or subsystems intended to offer significant economic benefits; analysis and comparative evaluation of the more promising concepts; and conclusions concerning further design, development, and test activities. Concepts found to be particularly promising include a pneumatic gate-drive mechanism and a swing-away, gravity-resetting arm support intended to reduce the incidence of gate breakage; and a gate arm utilizing new materials to obtain resistance to breakage.

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