3 ms·

I'm very hopeful that Boston commuter rail gets electrified with the associated speed and frequency improvements soonish. the inner half of the commuter rail ne

I'm very hopeful that Boston commuter rail gets electrified with the associated speed and frequency improvements soonish. the inner half of the commuter rail network is absolutely dense enough to be worth running service every 15 minutes on peak and every 30 off peak

potato3732842 2y ago
Top speed (mostly) comes from the tracks, not the method of motive power. As it stands they're already maxing out and exceeding (when they're late) the max speed for the class of rail they have. Some of the inner stops might get a few seconds faster with better acceleration but that's about it. The grade crossings are also kinda f'd. At full speed you can be in the middle of the train and see the arms still be in the process of lowering at certain crossings. That ain't safe. Faster won't make that better.
- scottbez1 2y ago
  Top speed, sure, but for typical commuter heavy-rail, a non-express train isn't running at top speed for all that long. Diesel-electric trains take a LOT longer to accelerate compared to a modern EMU, so much so that Caltrain's electrification project shaved 23 minutes off the SF to San Jose local trip, from 100 to 77 minutes. Videos [0] [1] make the acceleration improvement pretty clear. [0] https://x.com/Caltrain/status/1804278237486588179 https://x.com/Caltrain/status/1804278237486588179 [1] https://x.com/eiioth/status/1822814729079009516 https://x.com/eiioth/status/1822814729079009516
  - potato3732842 2y ago
    The MBTA already runs top speed on most of its lines once you get outside of roughly I95 depending on the line. Getting there faster would help but I don't think it would shave as much time off the end to end trip as you think. And for the urban stops they already accelerate and brake at the limit of what is reasonable for standing passengers. They can't push it too much or an old lady is gonna bounce off a wall and get a nose bleed and that's a bad look. It's not like Acela where a ticket guarantees a seat. There will definitely be some improvement from electrification but I don't think it will affect median travel times much and the affect on average will mostly be from reliability.
    - ghaff 2y ago
      The Fitchburg line did do upgrades a few years ago. I think they double-tracked sections that weren't. It still take a while--hour+--from the outer reaches.
    - adgjlsfhk1 2y ago
      if there aren't enough seats and they're still running 30 minute headways, that's incredibly stupid.
      - ghaff 2y ago
        Not enough seats is mostly pretty close into the city in my experience. At least on the line that I sometimes take, it's mostly Waltham in which doesn't have a mass transit line.
Xylakant 2y ago
Why ask for 15/30? My schedule right next door for the Berlin subway is 3/10. During peak hours, you don’t even check when the next train runs. And they’re all full. I do believe Boston has more inhabitants than this small city.
- Symbiote 2y ago
  The Boston commuter rail network would be equivalent to Berlin's S-Bahn network, which is 10/20 minutes, and 30 on Friday and Saturday nights.
- adgjlsfhk1 2y ago
  the subway is at 5/10 or so (it would be very nice if we got it down to 3/10), the commuter rail, however is mostly hourly at peak and 2 hours to never of peak
  - ghaff 2y ago
    Yeah. I'll usually take commuter rail in for the rare 9-5ish stuff because it's such a lousy drive. But catching one of the very few later trains, especially if I have to time it with the subway, just doesn't work and it's usually a <1 hour drive anyway at that time of night. I'm also pretty far out and not all the trains run that far.

potato3732842 2y ago

Top speed (mostly) comes from the tracks, not the method of motive power. As it stands they're already maxing out and exceeding (when they're late) the max speed for the class of rail they have. Some of the inner stops might get a few seconds faster with better acceleration but that's about it. The grade crossings are also kinda f'd. At full speed you can be in the middle of the train and see the arms still be in the process of lowering at certain crossings. That ain't safe. Faster won't make that better.

scottbez1 2y ago
Top speed, sure, but for typical commuter heavy-rail, a non-express train isn't running at top speed for all that long. Diesel-electric trains take a LOT longer to accelerate compared to a modern EMU, so much so that Caltrain's electrification project shaved 23 minutes off the SF to San Jose local trip, from 100 to 77 minutes. Videos [0] [1] make the acceleration improvement pretty clear. [0] https://x.com/Caltrain/status/1804278237486588179 https://x.com/Caltrain/status/1804278237486588179 [1] https://x.com/eiioth/status/1822814729079009516 https://x.com/eiioth/status/1822814729079009516
- potato3732842 2y ago
  The MBTA already runs top speed on most of its lines once you get outside of roughly I95 depending on the line. Getting there faster would help but I don't think it would shave as much time off the end to end trip as you think. And for the urban stops they already accelerate and brake at the limit of what is reasonable for standing passengers. They can't push it too much or an old lady is gonna bounce off a wall and get a nose bleed and that's a bad look. It's not like Acela where a ticket guarantees a seat. There will definitely be some improvement from electrification but I don't think it will affect median travel times much and the affect on average will mostly be from reliability.
  - ghaff 2y ago
    The Fitchburg line did do upgrades a few years ago. I think they double-tracked sections that weren't. It still take a while--hour+--from the outer reaches.
  - adgjlsfhk1 2y ago
    if there aren't enough seats and they're still running 30 minute headways, that's incredibly stupid.
    - ghaff 2y ago
      Not enough seats is mostly pretty close into the city in my experience. At least on the line that I sometimes take, it's mostly Waltham in which doesn't have a mass transit line.

Xylakant 2y ago

Why ask for 15/30? My schedule right next door for the Berlin subway is 3/10. During peak hours, you don’t even check when the next train runs. And they’re all full. I do believe Boston has more inhabitants than this small city.

Symbiote 2y ago
The Boston commuter rail network would be equivalent to Berlin's S-Bahn network, which is 10/20 minutes, and 30 on Friday and Saturday nights.
adgjlsfhk1 2y ago
the subway is at 5/10 or so (it would be very nice if we got it down to 3/10), the commuter rail, however is mostly hourly at peak and 2 hours to never of peak
- ghaff 2y ago
  Yeah. I'll usually take commuter rail in for the rare 9-5ish stuff because it's such a lousy drive. But catching one of the very few later trains, especially if I have to time it with the subway, just doesn't work and it's usually a <1 hour drive anyway at that time of night. I'm also pretty far out and not all the trains run that far.