Easy: keep the Queen line going west to Humber Bay. The Waterfront LRT can turn north instead, and they can interchange near Roncesvalles.
Getting back on topic, though, I'm wondering whether just building one school would be enough. I would want to see David Hornell Junior School or George R Gauld Junior School to be refurbished/expanded as well to future-proof adjacent neighbourhoods.
IF the Queen Subway was built (as a streetcar subway), the extensions would have included The Queensway right-of-way and further extensions along Lake Shore Blvd. W. and The Queensway in Etobicoke towards Sherway Gardens
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What's needed on the current The Queensway and Lake Shore Blvd. West (assuming) right-of-ways is the following:
1. Replace the single-point track switches with double-point tracks? Similar to the double-point track switches used by the heavy rail lines in existance and light rail lines being constructed? Currently, the streetcar operators have to "stop" at each single-point switch. This would increase the speeds.
2. Remove the closely spaced stops, where they can be serviced by another stop or station further apart. This would increase the speeds of the vehicles.
3. Implement "REAL" transit priority signals. Currently, we have left turn priority being given to single-occupant motor vehicles instead of the 100+ on board the streetcars. With real transit priority, streetcars leaving a stop would be able to activate their traffic signals ahead of time as they approach the next stop.
4. Outside cameras to record violations by motorists who disobey the rules of the road that involve the traffic signals or streetcars.
5. Instead of a single track loop to serve the Park Lawn GO Station loop, it should be a double track loop. No backtracking for the eastbound streetcars,