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(oh weird, my post got cut off, so, continued....) @ulrichomega and @Riverside, just a note on that crude drawing for a station, in purple. It's 1050ft long (Amtrak length) and 165ft wide, for a six track terminal station. That's for some extravagant future with 7.5 minute regional rail...

Thanks to everyone commenting on the airport proposal! I got a couple pages of responses here, then no time to respond for a few days, but I'm back I see, I see. My bad. My drawing was off and I was throwing out NSRL specs from memory, which were wrong. Ignoring the details of what I drew...

A fleet of autonomous cars might solve the parking problem (kind of, they still need to park somewhere at night). But I'll pretty comfortably say that isn't going to solve any transportation problems. You might find this interesting. A chart like this is what got me more interested in this...

Bumping this. There was the whole report on costs and benefits for NSRL that was supposed to come out of the Harvard, I think this fall. Anyone know what happened to that?

How slow? You phrased this as if to suggest my new proposed tunnel would average 15-20 mph. That's ridiculous. The route I drew has a half mile curve radius, then over a mile and and a half of straight track. And the grade can be extremely level. This could connect to NSRL tunnels 100 feet...

A very reasonable question that I can't answer for certain. But yeah, I think it's worth it. The route you've drawn is about twice as long. With the extra curves, steep bridge over the Mystic, and extra stop in the middle, it'll average less than half the speed of my proposal. That could end up...

Yes, it is. Most people on Logan-bound trains will still just be people traveling from south and west of the city to somewhere downtown Boston. That includes the North Station area. There are lots of jobs in that area, even if it isn't as dense as other neighborhoods. There's a ton of...

If the decline started in the 1920's, then a picture from that time would show the city basically in its prime. Right? What specifically about that photo looks like urban decline?

I think I agree. My hesitation is I kind of expect DCR to do a crap job without some public oversight. There are so many instances of them favoring car traffic above the safety of anyone else. Now it looks like they're building a bike lane in an really reactive way. There seems like a risk they...

Since transit to Logan has come up in other threads lately, here's (I think) the best possible solution. Assuming a world with NSRL, Logan should be connected to the commuter rail. And it should look like this: That blue line is a TBM'd tunnel, a little longer than three miles, that would...

I'm confused. What part of this looks like decay and urban flight? The city looks pretty intact to me. The West End and Scollay Square are still there. Actually, you can see a train on the Atlantic Avenue El, just above the Northern Avenue Bridge, so this must be before 1938. Squinting at the...

If the yards are split among the outer part of the lines, how big do they have to be? You mentioned storing 24-30 trains at Widett for Regional Rail. If that is split among eight lines, then 3-4 trains per mini-yard out around 128 somewhere? It seems reasonable to me that the T could, over the...

What exactly is the plan for this 12' bike path? There's no extra 12' in the existing road and sidewalk. Are they expanding the sidewalk south? Rebuilding part of the bridge over an active railway? This doesn't make sense they can just announce something like that and start next week. What's...

I'm not sure how you mean this. Are you saying this should be the T's bargaining position? ("Help us with NSRL and we'll free up some space for you.") Or are you saying NSRL automatically frees up space that Amtrak could start using?

I've had to run regular errands in Quincy all this year and the Red Line has been somewhere between miserable and non-existent. So of course, when the train is finally fixed.... this is exactly when my work is wrapped up an I don't have to go anymore. But this is great! 20 minutes faster...

That's pretty horrific seeing those all lined up like that. But is this really any different than usual? This looks like the normal background rate of death and destruction. This ought to be considered intolerable, and we should shift people away from the most dangerous possible mode of...

If you keep tunneling down east of the World Trade Center Station, is there space to go under the highway instead?

I get this sentiment, but you're kind of saying this like "the town" is some singular entity, or one person, who's now flip-flopping or being hypocritical. It's not. Those were completely different people who made that bad decision 50 years ago. People in Arlington today aren't the ones...

Yeah, but what is your compelling reasoning? Why is Boston different? You're just asserting it as a fact, and that's not very convincing.