Track Geometry

Engineering the Wheel/Rail Interface for Rail Transit

By Jeff Tuzik • July 2010 Wheel/rail interaction is complex, variable and difficult to manage—especially on rail transit systems where noise, vibration and ride quality present daily challenges. As a result, managing the wheel/rail interface requires constant attention and innovation. Speakers at Advanced Rail Management’s Rail Transit 2010 seminar on …

Friction Management and Curve Elevation

By Mike Gilliam and Russell Rohlf • October 2010 Optimizing friction management is an ongoing project on Union Pacific. Gauge-face (GF) lubrication is a long-standing program, but it requires an additional 400 units to reach optimum efficiency. A large number of top-of-rail (TOR) units are needed, as well, as UP is only beginning …

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