Our primary focus in the passenger rail and urban transit industry is providing source inspection, quality assurance monitoring, and final inspection of hardware. By using totally independent inspection resources, customers can save millions of dollars in both retrofit/modifications and overall maintenance costs for the life of their projects. Quality independent inspection resources also assure our clients they are receiving the highest quality product at the price point they demand.

QOS provides staff knowledgeable in all aspects of passenger rail and urban transit component testing. Whether using one of our engineers or our highly skilled and knowledgeable certified inspectors, QOS staff are qualified to review and approve test procedures as well as witness both static and dynamic tests. Through the use of our independent team of engineers and inspectors our customers can rest assured that their products meet or exceed their performance requirements and have been tested to ensure strict compliance with specifications.