- Metro D Route pocket track [01]
- Greenbelt interlocking
- College Park interlocking [01]
- College Park interlocking [02]
- East Falls Church interlocking
- Largo interlocking
- Vienna interlocking
- Metro D Route pocket track [02]
- Interlocking signal at Anacostia station
- Silver Spring pocket track
- Largo Town Center interlocking
- Eisenhower Avenue interlocking
- Interlocking signal at Sheppard-Yonge
- Interlocking outside of Ashburn station
- Manual track switch
- Court Street interlocking board