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Wheel/Rail Interaction

Protected: Derailment Mitigation at Switches and Turnouts: Three Perspectives

October 29, 2025 | Filed under: Wheel/Rail Interaction

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Mitigating Noise and Vibration on Rail Transit Systems

October 27, 2025 | Filed under: Wheel/Rail Interaction

by Jeff Tuzik Noise and vibration-related issues may not be the first concern that comes to mind in considering wheel/rail interaction. But in the rail transit industry, noise and vibration are king. Complaints about noise, in particular, can put immense political and financial pressure on transit agencies, so mitigating these …

How Rail Grinding and Milling Affect Noise on Transit Systems

September 22, 2025 | Filed under: Wheel/Rail Interaction

by Jeff Tuzik A well optimized wheel/rail interface is a quiet wheel/rail interface. In the rail transit environment, there are many technologies and strategies to reduce wheel/rail-generated noise, and they tend to focus on reducing rail roughness. Standard rail grinding, acoustic rail grinding, rail milling, and specialized acoustic grinding machines …

Norfolk Southern Embarks On a New Approach to Rail Defect Repair

August 20, 2025 | Filed under: Wheel/Rail Interaction

by Jeff Tuzik Internal rail flaws and defects are an unfortunate but unavoidable part of railroading. All railroads have them. All railroads have to repair them. Defect remediation, which involves cutting out the affected rail and replacing it with plug rail, is a necessary, but costly and time-consuming process; it’s …

Total Friction Management on CPKC’s Thompson Subdivision and Beyond

August 17, 2025 | Filed under: Wheel/Rail Interaction

by Jeff Tuzik In the railroad industry, friction management takes many forms. Managing friction through the application of lubrication and friction modifier products is a key component of maintaining an optimized wheel/rail interface. North American railroads typically use some combination of gage-face lubrication and top-of-rail (TOR) friction modifiers on various …

Autonomous Inspection on CPKC and the Future of Track Inspection

August 3, 2025 | Filed under: Wheel/Rail Interaction

by Jeff Tuzik Track geometry inspection has always been an intrinsic part of railroading. That hasn’t changed and never will. But the way inspections are performed and the data they yield is changing rapidly. Automation is one of the biggest factors in the change, but the sophistication of inspection technologies …

Studs: Squat-Type Defects that are Misunderstood and Mismanaged

July 15, 2025 | Filed under: Wheel/Rail Interaction

by Jeff Tuzik Squats and studs (squat-type defects) are a topic of discussion and debate in the world of wheel/rail interaction. Their similarity in appearance leads many experienced track people to misidentify them, and the urgency with which they need to be addressed. As previously reported in Squats & Studs: Emergent …

Mike Roney Receives the 2025 Worth Award

June 26, 2025 | Filed under: Wheel/Rail Interaction

by Jeff Tuzik Wheel Rail Seminars named Mike Roney, Principal of Iron Mustache Consulting, and retired General Manager, Track and Structures and Chief Engineer with Canadian Pacific, the recipient of the 2025 Worth Award. The award, presented at the annual Wheel/Rail Interaction Heavy Haul conference, is named for Art Worth, the …

Digging Into Cause Codes for Track-Related Derailments

June 24, 2025 | Filed under: Wheel/Rail Interaction

by Jeff Tuzik Derailments have many causes. Some are fairly simple and straightforward, others involve a complex combination of factors and circumstances. Determining the root causes is what keeps derailment investigators busy, and what helps railroads avoid such derailments in the future. Over the years, and over the course of …

Taking Stock of 30 Years of Wheel/Rail Interaction

June 2, 2025 | Filed under: Wheel/Rail Interaction

by Jeff Tuzik As Wheel Rail Seminars prepares to host it’s 30th annual Wheel/Rail Interaction Conference in Kansas City, it’s worthwhile to look back on how the “narrow” field of wheel/rail interaction has broadened and matured over the decades. The field of wheel/rail interaction is highly targeted; focusing on the …

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