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Search: Posts Made By: chmeeee
Forum: Transit and Infrastructure 03-20-2018, 08:29 PM
Replies: 1,203
Views: 173,903
Posted By chmeeee
Re: Silver Line to Chelsea

That Kassel Kerb would survive about 1.5 Boston winters.
Forum: Transit and Infrastructure 02-03-2018, 09:06 PM
Replies: 1,203
Views: 173,903
Posted By chmeeee
Re: Silver Line to Chelsea

You're out of your gourd. In 2025, the majority of the new trucks sold this year will still be on the road. None of those are electric. I don't even think we'll get to the point where the majority...
Forum: Transit and Infrastructure 01-19-2018, 08:38 PM
Replies: 1,203
Views: 173,903
Posted By chmeeee
Re: Silver Line to Chelsea

Not much of a risk with Summer Street. Just need to shut off the D Street southbound @ Congress Street light to avoid gridlocking that intersection (hold the queues on the previous block).
Forum: Transit and Infrastructure 01-18-2018, 10:16 PM
Replies: 1,203
Views: 173,903
Posted By chmeeee
Re: Silver Line to Chelsea

Pretty much this. The pedestrian phase would force most of a 20 second minimum anyways. It will throw it totally out of coordination with the adjacent signals, but... priorities.
Forum: Transit and Infrastructure 01-18-2018, 08:28 AM
Replies: 1,203
Views: 173,903
Posted By chmeeee
Re: Silver Line to Chelsea

I'm calling for a short minimum green time on D so you don't have situations where buses have to wait a minute plus to get across. They don't need absolute priority, life will go on if they have to...
Forum: Transit and Infrastructure 01-17-2018, 10:56 PM
Replies: 1,203
Views: 173,903
Posted By chmeeee
Re: Silver Line to Chelsea

This is not a rail crossing. 60 crossings per hour would be one per minute. Plenty of signals in the metro Boston area operate on cycle lengths of ~60 seconds.

Also, it doesn't need TSP, that's...
Forum: Transit and Infrastructure 01-17-2018, 08:23 PM
Replies: 1,203
Views: 173,903
Posted By chmeeee
Re: Silver Line to Chelsea

There is a lot more flexibility to the capacity than that. You are assuming for some reason that they can't increase the length of the busway green phase. Set it with a short minimum green for...
Forum: Transit and Infrastructure 12-30-2017, 10:27 PM
Replies: 1,203
Views: 173,903
Posted By chmeeee
Re: Silver Line to Chelsea

With Lower Broadway, the solution is really to take the space from the off-peak direction, but that's much more infrastructure intensive to make it safe and operable. That said, I think the...
Forum: Transit and Infrastructure 04-22-2017, 10:07 PM
Replies: 1,203
Views: 173,903
Posted By chmeeee
Re: Silver Line to Chelsea

There's also no freakin reason that the D Street light needs to be a part of any project. It's something that can be done just by swapping in a few thousand dollars worth of equipment plus maybe 2...
Forum: Transit and Infrastructure 02-07-2017, 11:21 PM
Replies: 1,203
Views: 173,903
Posted By chmeeee
Re: Silver Line to Chelsea

That looks like about the right location for a signal foundation. Signals have to be at least 40 feet from the stop bar so you can see them below the top of your windshield. If the stop bar were...
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