Should our Dear Leader Doug Ford force the building of the Line 1 Yonge extension upon us BEFORE the Relief Line, and leave the operation to the TTC, I see see this happening:
1. The ATC would have been implemented and in operation for Line 1. This would allow for more frequent headways and quicker crossovers. With ATC, the headways on Line 1 could go from 2.5 minutes to 1 minute and 55 seconds during rush hours.
2. There would be crossovers tracks available at Steeles Station and at Eglinton Station.
3. To make sure that riders would be able to board trains on the southbound trains on the Yonge leg of Line 1, there will be short turns during the rush hours.
a. Steeles Station short turns for every third train.
b. Eglinton Station short turns for every third train.
c. Richmond Hill Centre Station for every third train.
4. For non-rush trains, every other train will short turn at Steeles Station. The remainder will continue on to Richmond Hill Centre Station.
5. This arrangement will last until the Relief Line is built and in operation.
a. When the Relief Line gets up to the Science Centre Station (Eglinton East), the short turn at Eglinton can be dropped.
b. When the Relief Line gets up and joins Line 4 Sheppard, the short turn at Steeles can be dropped.
Even the New York Subway has headways of 10-20 minutes in the non-rush hours, 2-5 minutes during the rush hours.