flangeway

plural flangeways

1. historicalrail transportAn early type of railway that used flanged rails rather than flanged wheels.
2. rail transportThe gap in road surfaces, running rails at rails at junctions, etc, that allows the wheel flange of a rail vehicle to pass.

   Available at most hobby shops, this tool allows you to check track gauge, flangeway spacing and width, and many other dimensions.

   2004, Jeff Wilson, “Track basics”, in Basic Trackwork for Model Railroaders: The Complete Photo Guide, Kalmbach Publishing, →ISBN, NMRA Standards Gauge, page 14

   3 more examples

   The factors in determining the width of flangeways between check rails and the main rail are the thickness of the wheel flange and the clearance allowed […]

   1895, Tables and Diagrams of Switches and Crossings: A Handy Platelayer's Guide, 3rd edition, Bemrose and Sons, Flangeway clearance, page 22

   The use of a high-temperature gas torch for melting the ice out of the check-rail flangeways, was found to be effective, although somewhat tedious; neglect of this precaution may cause derailment, [...].

   1941 April, “Notes and News: Railwaymen and Snow”, in Railway Magazine, page 178

   Insure that ample flangeway is available between the open point of switch and the stock rail; this is controlled by flange width of crane wheels using the track system

   1980, United States Department of the Army, Maintenance of Trackage, United States Department of Defense, Chapter 3 Track Structure Elements, Section 3–31. Turnouts and Crossovers, Paragraph 3.31.7.4, pages 3–35

   Synonyms: groove