TheTigerMaster
Superstar
It may be faster for someone to transfer from bus to Stouffville to get downtown - at least the financial district and south core. Which is why an extension to Agincourt makes more sense: those on a bus can transfer at Agincourt, or travel ~4 stops for DRL, or a few more for line 1 (east), or another two stops to line 1 (west) if the western extension is also built.
Most riders will be using the DRL to get downtown. It's cheaper, more frequent, and generally puts people closer to their final destinations.
But lets analyze how your proposal would impact trip times. For people that want to take Stouffville RER to get Downtown, your proposal to extend the Sheppard Line to Agincourt has no impact on them. So let's look at persons coming from east of Agincourt (by bus), looking to travel Downtown via DRL
It's 5.3 km between Agincourt and Don Mills.
By BRT, moving at 23 km/5, it takes 14 mins to travel that distance.
Let's look at the subway travel time:
- A passenger would need to walk from the bus to the subway platform. Let’s say that adds +90 seconds (a pretty conservative estimate given then long transfer times in the new TYSSE stations)
- They’d need to wait, on average, 2.5 minutes for the subway train
- Then it would take the train, travelling at 30 km/h, 10.5 minutes to travel 5.3 km.
So the total time between Agincourt and Don Mills Stations for your proposal would be 14.5 minutes. This proposal of yours does not save people any time if they’re coming from east of Agincourt (in fact, it adds about half a minute).
Nevermind that there'd be issues with the ridership of this extension. The extension to STC was expected to add around 3,000 peak hour riders, and an extension only to Agincourt would be a fraction of that.