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  • 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 …

  • 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 …

  • How Sound Transit Controls Train-Borne Noise

    March 31, 2025 | Filed under: Bob Tuzik, Noise and Vibration, Rail Grinding, Rail Transit

    by Bob Tuzik This article was originally published in Mass Transit (June 2023). Challenges abound in the design, construction, maintenance, and operation of light rail lines in urban areas. Chief among them is controlling track- and vehicle-born noise, an important part of maintaining the support of an agency’s various stakeholders, …

  • Vehicle Design: Managing Wheel/Rail-Generated Noise and Vibration from the Ground Up (Part 2)

    March 31, 2025 | Filed under: Briony Croft, Noise and Vibration, Vehicle Design, Vehicle/Track

    By Jeff Tuzik This article was originally published in Mass Transit (June 2024) in conjunction with the annual Wheel/Rail Interaction Rail Transit conference. In part 1 of this article, a group of experts, including a transit operator, three vehicle manufacturers, and a noise and vibration consultant, examined how to mitigate wheel/rail-generated noise at the …

  • Vehicle Design: Managing Wheel/Rail-Generated Noise and Vibration from the Ground Up (Part 1)

    March 31, 2025 | Filed under: Noise and Vibration, Vehicle Design, Vehicle/Track

    The article discusses the challenges of vibration and noise in rail transit operations, emphasizing the importance of vehicle design and technology in mitigating these issues. Key design factors, such as unsprung mass and suspension characteristics, significantly impact performance. Strategies from experts and case studies highlight the complexities of optimizing vehicles for noise and vibration control.

  • Implementing Rail Grinding and Wheel/Rail Interface Optimization Programs on Heavy Haul and Transit Systems: Lessons Learned

    March 27, 2025 | Filed under: Noise and Vibration, Rail Grinding, Rail Maintenance

    Rail grinding has evolved significantly since the 1980s, with preventive grinding becoming key for rail maintenance. Eric Magel shares insights from global experiences, highlighting failures due to improper grinding methods and the importance of maintaining optimal rail profiles. Recent advancements in technology and strategies continue to alter rail grinding practices for efficiency and effectiveness.

  • Assessing the Findings of a Derailment Investigation: Was the Right Cause Found?

    January 21, 2025 | Filed under: Brad Kerchof, Derailment, Heavy Haul, Wheel/Rail Interaction, WRI Conference

    by Jeff Tuzik The Great Dismal Swamp. An ominous name. And in June of 2019, it was the site of a Norfolk Southern derailment. At NS, all derailments are investigated to determine the cause(s) and to provide data that could help prevent future incidents. Brad Kerchof, formerly Director of Research …

Protected: Mitigating Track Buckling on São Paulo’s Metropolitan Train Network

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Protected: Extending Wheel Life Through Rail Grinding

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Protected: How Rail Grinding and Milling Affect Noise on Transit Systems

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Norfolk Southern Embarks On a New Approach to Rail Defect Repair

by Jeff Tuzik Internal rail flaws and defects are an unfortunate but unavoidable part of railroading. All railroads have them. All railroads …

Total Friction Management on CPKC’s Thompson Subdivision and Beyond

by Jeff Tuzik In the railroad industry, friction management takes many forms. Managing friction through the application of lubrication and friction modifier …

Autonomous Inspection on CPKC and the Future of Track Inspection

by Jeff Tuzik Track geometry inspection has always been an intrinsic part of railroading. That hasn’t changed and never will. But the …

Studs: Squat-Type Defects that are Misunderstood and Mismanaged

by Jeff Tuzik Squats and studs (squat-type defects) are a topic of discussion and debate in the world of wheel/rail interaction. Their …

Mike Roney Receives the 2025 Worth Award

by Jeff Tuzik Wheel Rail Seminars named Mike Roney, Principal of Iron Mustache Consulting, and retired General Manager, Track and Structures and …

Digging Into Cause Codes for Track-Related Derailments

by Jeff Tuzik Derailments have many causes. Some are fairly simple and straightforward, others involve a complex combination of factors and circumstances. …

Taking Stock of 30 Years of 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 …

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