Metro‑North Railroad is modernizing its commuter rail fleet with a new dual‑mode locomotive capable of operating in both diesel and electric modes. These next-generation locomotives meet EPA Tier IV emissions standards and can operate on third‑rail, enabling reliable operation in the Park Avenue Tunnel and throughout the New York region. STV’s vehicle engineering team supported this fleet transformation by providing design reviews, testing oversight and vehicle inspection services throughout the procurement process.
What challenges did STV address?
The new dual‑mode locomotives had to meet rigorous environmental, performance and compatibility requirements while navigating complex operational constraints in New York and Connecticut. Ensuring safe operations within the Park Avenue Tunnel and across Metro‑North’s electrified territory required a thorough systems evaluation. The procurement spanned the COVID‑19 pandemic, which created global supply chain disruptions and required close coordination with Siemens Mobility’s manufacturing operations.
What solutions did STV deliver?
STV performed detailed design reviews, test coverage and vehicle inspections to confirm compliance with Metro‑North’s technical specifications. The team evaluated propulsion, emissions reduction, third‑rail interfaces, crashworthiness, passenger‑comfort systems and overall performance. STV’s oversight supported a high‑quality procurement process despite pandemic‑related disruptions.
How does this project benefit the community?
The dual‑mode locomotives offer cleaner, faster, more efficient service. Their ability to operate in the Park Avenue Tunnel enables potential single‑seat rides from unelectrified lines into New York City. Reduced CO₂, particulate matter and NOx emissions bring environmental benefits to communities across the region.
Key stats and accolades
- Tier IV compliant dual‑mode locomotive
- Diesel and electric operations, including Park Avenue Tunnel
- Supports future single‑seat rides from unelectrified lines
- Reduced CO₂, PM and NOx emissions
- Built by Siemens Mobility
