@Muse - This circuit implements a dual-purpose control scheme for a model railway turntable connected to a multi-track yard network:
### Operating Principle
- **Rotation Drive**: An electric gearmotor (#TABLE) drives the turntable bridge. Its direction of rotation (clockwise vs. counter-clockwise) is controlled by the DPDT reversing switch formed by #DIR1 and #DIR2. Flipping both switches reverses the drive voltage across the motor terminals, smoothly turning the table to align with radiating network tracks.
- **Track Power Routing**: When an engine enters or leaves the turntable bridge, track polarity and power must feed the aligned stall or lead track. The selector switch #TRACK models bridge track routing to network branch #LOAD_A (Stall 1) or #LOAD_B (Stall 2).
- **Auto-Phasing**: Because rails rotate $180^\circ$ end-for-end, polarity alignment across the rail network is maintained directly from the bridge rail feeder bus connected across #DIR1 and #DIR2.
