The thing that blows my mind is there is no real signal system. It's all based on the train op seeing how close the next train is. In a sense that's closer to bus ops so maybe it wouldn't be so bad mixing them.
-
-
Replying to @vanshnook
You are right about how it operates now but I believe a more real signal system is years late but on the way for the Green Line if I’m not mistaken
@sandypsj?1 reply 0 retweets 0 likes -
Replying to @weeseandbeyond @vanshnook
I don't think so? There are new CBTC systems planned for the Red and Orange Lines, but the study to determine the future of the Green Line is just kicking off. The MPO approved this scope yesterday http://ctps.org/data/calendar/pdfs/2018/MPO_0301_Work_Program_Green_Line_Corridor_Study_Support.pdf …
1 reply 0 retweets 1 like -
Line-of-sight is obviously subject to human error, but I think in other equivalent installs of CBTC on subway-surface tunnels (SF and Philly) capacity has actually gone down, in part because no signal system is OK with double-berthing.
3 replies 0 retweets 2 likes -
Replying to @sandypsj @vanshnook
Without double birthing you could at least run trains that take advantage of the platform length as long as the surface sections could handle it
1 reply 0 retweets 0 likes -
Replying to @weeseandbeyond @vanshnook
Yeah that's one of the things they've been kicking around forever and are now finally looking at. It's complicated because the entire GL system is just such a mess.
2 replies 0 retweets 1 like -
Replying to @sandypsj @weeseandbeyond
The key is separating the B/C from the D/E. By extending Huntington Av to Brookline and building a Stuart St subway you in effect create two systems, one for high capacity light rail and the other streetcars.pic.twitter.com/F7V5FCa9en
3 replies 0 retweets 2 likes -
yo hold up where is a link to the full pdf of this
3 replies 0 retweets 2 likes -
On my computer ;)
1 reply 0 retweets 2 likes -
s m h
1 reply 0 retweets 0 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.