Wide gage—a fatigue failure of the track to maintain the nominal lateral distance between rail heads—is one of several modes of track failure on which the AAR-FRA-RPI-TDA Track Train Dynamics Program has focused attention. To investigate the generation of wide gage on tangent track, experiments were conducted to measure track dynamic response and long-term fatigue life of track sections on the Union Pacific Rail-road in Idaho. Results of these experiments have defined the important factors in this mode of track fatigue.

This content is only available via PDF.
You do not currently have access to this content.