To meet growing commuter rail demand across Greater Boston, the Massachusetts Bay Transportation Authority (MBTA) advanced the procurement of new bi‑level coaches that increase seating capacity and improve rider comfort. Following the launch of the Greenbush Line service between Boston and the South Shore, the MBTA selected STV, in joint venture, to provide engineering support for the acquisition of 28 stainless steel bi‑level rail cars. The vehicles enhance system capacity and introduce modern amenities for thousands of daily passengers.
What challenges did STV address?
The MBTA required a new generation of coaches that could accommodate more riders without lengthening trains or altering existing infrastructure. Achieving this goal meant ensuring that vehicle specifications, onboard systems and mechanical components met the agency’s performance, safety and interoperability requirements. STV needed to help guide a complex procurement effort that balanced capacity, reliability and long‑term maintainability.
What solutions did STV deliver?
STV provided comprehensive engineering support throughout the procurement, advising on vehicle systems, equipment specifications and integration needs. The new bi‑level coaches are 85 feet long and offer 55 percent more seating capacity than single‑level cars. They include upgraded amenities such as advanced air‑conditioning systems, LED passenger information displays and new microprocessor‑based controls for doors, communications, braking and signaling. STV’s involvement ensured that each system met MBTA design criteria and supported seamless integration into the commuter rail fleet.
How does this project benefit the region?
The bi‑level coaches allow the MBTA to accommodate more riders per train, improve comfort and enhance the overall passenger experience. The upgrades help reduce crowding, support future ridership growth and modernize one of the nation’s busiest commuter rail systems.
Key stats and accolades
- 28 new stainless steel bi‑level coaches
- 55 percent more seating capacity than single‑level cars
- Advanced HVAC, LED displays and microprocessor controls
