Quote:
Originally Posted by niwell
For sure, just the term “driverless” can be a bit misleading and often cited as a cost saving measure. In reality it’s more about signalling and automatic control that allows these things. The “driver” is now more of an operator to make things are going smoothly. Line 1 of the TTC can accommodate screen doors from a train perspective at this point, and has very minimal headways. The biggest challenge with screen doors I believe is actually ventilation - unlike newer systems the tunnel itself is integral to the ventilation system. This is why cost estimates seem so high.
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I interviewed with the Bombardier team that commissions these system back around 2000. I did not end up working for them and never ended up going into the industry so by no means an expert. Back then they had a big OS/2 server that ran the signaling and dispatched the trains. It worked well for Skytrain in Vancouver and other systems around the world.
There is no cab on any of the Skytrain cars. There is a locked cover in the passenger compartment that exposes the controls that you could use to manually drive a train if needed.
Skytrain staff don't drive or surprise individual trains they walk around the stations and sometimes on the trains answering question and dealing with customer service issues.
Key advantage of this in you can dynamically dispatch additional trains if demand suddenly changes. A hockey game ends at a stadium and with in minutes you can have extra trains. Once it is over you can take them back out of service. Spacing between trains can be better optimized.
I was in Toronto last month for a conferance at the fair ground and was staying a bit out of the core. So my commute was on a street car and the subway. I was surprised by how the smoke from the forest fires managed to get into subway tunnels. So, yes I can see ventilation being a problem.