Here is a O gauge set of (4) R30 subway cars one of them being powered. 

Lionel 6-31794 NYC Transit Authority R30 Subway Set

Entering service in 1961, R30 subway cars operated mainly in the Eastern Division of the New York City Transit Author­ity line. The last of them were retired in 1993 after thirty solid years of service. Dressed originally in Kale green, the R30’s were repainted red in the late 1960’s. A common route for the R30 class was on the designated QJ line which included travel between Queens’ 168th Street and Coney Island.

Featuring the Legacy Control System, Lionel’s R30 sub­way cars have opening doors and authentic subway sounds. Listen for the operator announcing true-to-life stops along the route. They also feature a wealth of realistic detail, decoration, and lighting features both inside the cars and out. 

Set Includes:

• Two "married" pairs, including one powered unit and three non-powered units
• Features
• LEGACY Control System equipped—able to run in LEGACY Control mode, in Command Control mode, or in Conventional mode with standard transformer
• LEGACY RailSounds sound system featuring:
  -CrewTalk dialog and TowerCom announcements
  -Sounds and effects digitally recorded from actual subway 
  -Legacy "Real-Time Quilling Horn" control with instant response for realistic signature "quilling"
• Odyssey II Speed Control with On/Off switch
• Passenger car doors open by remote control
• Authentically detailed interiors
• Directional lighting including prototypical marker lights
• Lighted destination and route boards on front and sides
• Dual powerful maintenance-free motors with momentum flywheels
• Die-cast metal trucks

Gauge: Standard O

Dimensions: Set Length: 60”

RailLine: NYC Transit

Minimum Curve: O-36