Sound Transit

Squat-type Defect Remediation on Sound Transit and The Search for Effective Preventive Maintenance Measures

by Jeff Tuzik (This article was previously published in the December 2025 issue of Mass Transit) One of the most vexing, and increasingly common rail defects that rail transit agencies contend with is the squat-type defect (stud). Addressing studs has been challenging in that they are not fully understood, and, …

Protected: Designing and Monitoring a One-of-a-Kind Vibration-Mitigation Track Section on Seattle’s Sound Transit.

Sound Transit Studies Wheel/Rail Interaction Differences Between Vehicle Types

by Jeff Tuzik Seattle’s Link Light Rail, operated by Sound Transit, is a fairly young system. And by most standards, a small system. But it’s also a sophisticated system, and it’s growing fast. The system currently operates 25 miles of track and is in the midst of expanding to 50 …