Why trains stop (04/27/06)
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 Have you noticed lately that your subway train stays a few extra seconds in some stations? Operators may even announce brief waits for “service adjustments”.

 For years, regular riders of the Bloor-Danforth line might have paused a while at Keele, Ossington or Chester. In an effort keep service evenly spaced and avoid possible crowding, trains were traditionally held back at specific points.

 TTC Operations General Manager Gary Webster says the subway dispatching system has been modernized, and trains can now hold at any station. He says not only does the upgrade “give us a new system to replace the one that was worn out and obsolete -- with cathode ray tubes and all kinds of old technology -- (but it) gives us more capability to manage the line.”

 Next time you’re holding in a station, you can be pretty sure there is a delay somewhere else on the line -- and gaps are developing between trains. However, if we have to wait, can the TTC make sure it’s at stops where a lot of people usually board -- like interchange stations?

 He says, “People are used to being held at Eglinton and Bloor and Union and St. George because they’ve always been held there... so we need to be sensitive to that. By holding customers at stations that are different, they’re going to have a hard time understanding that it’s for the benefit to the whole line. They’re not going to get the benefit necessarily -- as a matter of fact they’re going to get a disbenefit, because they’re going to have to wait 30 seconds.”

 The trade-off between reliability and longer trips is a topic of ongoing discussion among TTC staff, and the new scheduling system is still being fine-tuned. “I don’t think we’re there yet.” he says.

 Another potential delay to riders is when train crews transfer  en route to trains going in the opposite direction. Webster says this system has not changed much recently, and allows employees on delayed trains to return to the yard and finish their shifts on time. It is a more customer-friendly option than turning around the trains themselves. Ideally the crew would just transfer across a centre platform, instead of stations where exits are not ideally placed -- but that’s not always possible.

 I checked with TTC critic Steve Munro, who thinks the amount of time each train has to finish its run “could be tightened up a bit, but it's not going to make a huge difference.” In his opinion, subway operations personnel seem to be “getting fairly clever at managing the service, but it's impossible to be perfect.”

 There is another area where delays can be common -- at terminal stations. The TTC’s Webster did not believe that there was a significant problem there. I’d like to hear from readers who experience this regularly. Where and when are trains likely to wait before entering the last station on the line?

© Ed Drass 2008