Quote:
Originally Posted by Aylmer
I calculated that every station costs about 30s in deceleration, acceleration to 70km/h and dwell time). I completely agree that we can't be throwing stops around willy-nilly, but for 30s, we should at least examine whether it would it would be worth it.
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Time for some mathgeeking!
The trains we've ordered for Confederation Line have 100km/h as their interstation speed. I couldn't find an acceleration figure for the exact model the city has ordered, but a google search indicates that Alstom Citadis accelerates at 1.2m/s^2.
Assuming 1.2m/s^2, then its ~23.1 seconds to go from 0 to 100 or vice versa.
Assuming a 10-second dwell time, a stop would take a total of 56.2 seconds, from the train starting to slow down to being back at full speed (if anyone is curious, the distance required to transition from 0 to 100 is 309 metres--meaning that if stations are less than 618 metres apart, trains won't be able to hit full speed. That will definitely happen between Parliament and Lyon).
If the train just sped through that area without stopping, it would take 23.1 seconds to just speed through that area. So a stop adds 33.1 seconds total to the trip.