STV, in joint venture, provided engineering support services to the Massachusetts Bay Transportation Authority for the procurement of 28 new rail vehicles to accommodate service on the rehabilitated Greenbush Line. The stainless steel bi-level cars are 85 feet long, have seating capacity for 179 passengers, and are equipped with toilet facilities. They provided 55 percent more seating room than single-level cars and also feature updated amenities such as high-tech air conditioning systems; LED displays to show announcements and station locations; and new microprocessor systems to control doors, communications, brakes and signals.