Nice video! One interesting thing I noticed....the switch at the north end of the doubletrack appears to be an equilateral switch, and the signal governing northward movements from the east track does not have multiple colours available in the middle target. At Steeles, and at Milliken on the Uxbridge sub, and at various points on the Weston Sub, the planned additional track is already 'roughed in' into the interlocking plant with the full eventual crossover design present, but not used. Here, the control point is likely temporary. As doubletrack is pushed further north, there likely won't be a need for this control point....the final set of dual crossovers will be further north somewhere. ML must have specified the equilateral design so that trains on either track can proceed at 'full' speed. That's not too shabby.
- Paul