St. Louis Metro to test if single-car trains can reduce operating costs, maintain rider satisfaction

The pilot program will run from October to spring 2027, and begin with one single-car train operating on Metrolink’s Red and Blue lines.

1 minute read

September 25, 2026, 8:00 AM PDT

By Zachary Whalen


A blue Metrolink train with two cars drives toward the camera.

Metrolink will maintain its usual frequency and schedule throughout the single-car pilot to avoid service reductions. | Grindstone Media Group

The St. Louis Metro is starting a pilot program in October to test if single-car Metrolink trains could reduce operating costs and increase efficiency while maintaining safety and rider satisfaction, Noah Kolenda writes for Mass Transit. The pilot will span from Oct. 3 to spring 2027; its initial phase will see one single-car train operating on Metrolink’s Red and Blue lines.

“During the pilot, St. Louis Metro says it will conduct a detailed analysis using operational performance data, passenger feedback and ridership numbers to evaluate the efficacy of one-car trains for long-term use and in specific areas and conditions. The agency’s initial analysis suggests that single-car operations have the potential to generate annual maintenance cost savings between $800,000 to $4.8 million,” Mass Transit reports. 

St. Louis Metro will suspend the pilot during days where it expects peak ridership. Metrolink will also maintain its usual frequency and schedule throughout the pilot to avoid service reductions. 

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