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Re: Flashing Yellow Turn Arrows The Cedar St / Summer St light in Somerville, for traffic coming from Union Sq headed towards Davis, now has the usual three round bulbs red over yellow over green, plus a fourth bulb which is a yellow left arrow at the bottom that flashes simultaneously with at...

SL3 could potentially be routed I-90 -> Congress St -> new contraflow bus lane on Atlantic Ave -> Summer St -> Pumphouse Rd -> Massport Haul Rd -> The Ramp -> I-90. Hopefully the relevant parts of Summer St could get full time bus lanes and perhaps Congress St from B St to Boston Wharf Rd could...

I thought Braintree typically filled up pretty early in the morning whereas Quincy Adams tends to never fill up. If that's the case, why are they still the same price as each other? It seems like some of the Braintree parking users should be getting a financial incentive to park at Quincy...

Bus service to Newton commuter rail stops Trying to mix Indigo quality service at the Newton commuter rail stops with potential future Amtrak service from Boston to New York City via Springfield with just two tracks is not likely to work out well. Washington St, which nearly parallels the...

Re: North-South Rail Link Have you watched 13:10 to 13:20 of The Boring Company Information Session? The limitations current TBMs have in terms of not being able to dig out stations that are wider diameter than the tunnel away from the station, and often being abandoned when a tunnel is...

Re: MBTA 73 / 71 bus improvement bike lanes Does the section of Mt Auburn St between Homer Ave and Aberdeen Ave need two westbound general purpose travel lanes (as opposed to one lane) to deal with traffic volumes and/or any limits to how much green time is available at the Mt Auburn /...

Re: Davis Sq reconfiguration in Somerville Page 21 of https://2xbcbm3dmbsg12akbzq9ef2k-wpengine.netdna-ssl.com/wp-content/uploads/2018/04/20180427-DSQ-Neighborhood-Plan_PublicReviewDraft_Reduced.pdf proposes to fix that by removing automobile traffic from the part of Dover closest to the center...

Re: North-South Rail Link https://twitter.com/yfreemark/status/1007766586818793473 is a thread with a good summary of some of the challenges with the Chicago airport to downtown tunnel plan. I do wonder if experimentation with 12' diameter tunnels might lead to working out techniques that...

Davis signal retiming to eliminate the dedicated pedestrian phase that 75% of pedestrians have been smart enough to not wait for may end up changing typical queue lengths. https://twitter.com/somervillebike/status/1005134546017406976

It does look like the pilot is going to require a cross platform transfer if people want to continue past New Haven, which might somewhat depress ridership numbers relative to what is possible. The big reason that is typically cited for not running more trains from New York City to Boston is...

It might be possible to construct the NSRL in such a way that all of the commuter and Amtrak trains on the NEC side of Back Bay Station could duck under Fairmount / Old Colony trains heading to the Worcester side of Back Bay Station to grade separate this conflict. The other problem with...

Are the northbound parking spaces on the street between the north end of the Rite Aid parking lot and Chelsea St allowed to be used as parking during the afternoon rush hour? If they are used as parking, I'd expect them to cause more trouble than the two parking spots right next to the Rite Aid...

Re: North-South Rail Link Is the new Wollaston design even planning for the possibility of a second commuter rail track through that station?

I certainly think that traffic regularly exceeding the posted speed limit justifies making traffic calming changes, and I certainly think that proposing solutions that also improve biking is great, and while I certainly prefer to end up with a fix that gives more space to bikes, in theory if we...

Re: North-South Rail Link They also said something about minimum tunnel depth to avoid surface disruption being a function of tunnel diameter; I think it may have been a requirement to go two tunnel diameters down. I'm not sure if that's two tunnel diameters from the top of the tunnel to the...

Re: North-South Rail Link IIRC they may have said that hauling dirt away is normally 15%-20% of the total tunneling cost. They seemed to be describing a slightly different brick making process than what is typically done, which may result in a higher quality product. I've seen something...

Are people looking at the possibility of having an initial upper Broadway afternoon bus lane exist only from Sweetser Circle to Chelsea St? Google Maps typical traffic seems to show that that segment is generally red in the late afternoon, and nearly all of the rest of Broadway is generally...

Re: North-South Rail Link This is a Boring video with some thoughts on things that might reduce tunneling cost, like using the dirt to make bricks instead of treating it as a worthless waste product, and building concrete reinforcing sections on site. 15:07 has a video clip of a mining train...

My recollection is that it wasn't just about queueing, that it was also about letting Mem Drive traffic onto the bridge without having to yield to traffic from Main St, except of course that somehow the Mem Drive cars need to not collide with the bikes... At Charles Circle, we do get more...

https://www.clf.org/blog/renewable-energy-makes-history-in-new-england/ says New England has enough behind the meter solar (which powers loads that then don't get counted in the ISO New England system load) that the mid-afternoon system demand on April 21, 2018 ended up having a low point lower...