On the Lower Level Picard Junction allows switching between
Inner and Outer Loops for:
- Westbound trains on the Outer Loop to the Inner Loop
- Eastbound trains on the Inner Loop to the Outer Loop
Outer Loop and LeMaistre Loco
- Westbound departures
- Eastbound arrivals
Inner Loop and Lewiston turnaround Loop for:
- Turning Eastbound trains to Westbound
- Approach to Stirling staging by Eastbound trains