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Admiral Beez
Superstar
Getting there. By the end of the year all will be forgiven.
EastYorkTTCFan
Senior Member
Not really, most of that time was construction, they only started testing the vehicles about three years ago and had numerous software updates during that time.
Undead
Senior Member
The acceleration still seems slow?
Steve X
Senior Member
I'm glad they move to a lagging left, it's more efficient than a transit only inserted phase. However if a train arrives after the lagging left phase started, they should insert a transit phase to allow trains first.
They really need to speed up the speed allowed through the intersection.
Johnny Au
Superstar
Here's my ranking of the Line 5 Eglinton artwork:
1. Mount Dennis station
2. Caledonia station
3. Kennedy station
4. Eglinton station
5. Don Valley station
6. Cedarvale station
7. Oakwood station
8. Forest Hill station
Yes, I find text more interesting than abstract art.
How would you rank the Line 5 Eglinton artwork?
1. Mount Dennis station
2. Caledonia station
3. Kennedy station
4. Eglinton station
5. Don Valley station
6. Cedarvale station
7. Oakwood station
8. Forest Hill station
Yes, I find text more interesting than abstract art.
How would you rank the Line 5 Eglinton artwork?
pmacpherson68
New Member
they are also made as make shift bunkers... lol
zang
Senior Member
Tighter tunnels causes things like the air pressure changes that blow the station doors open at places like Sherbourne and Castle Frank when a train arrives, on top of just being less safe for those who may need to do maintenance when trains are running..
UKauga
New Member
Fyi, the most recent tune extension in London, the northern line to Battersea, was 17ft in diameter. Fairly certain the Elizabeth line is similar. https://tfl.gov.uk/info-for/media/p...for-northern-line-extension-tunnelling-machin
afransen
Senior Member
Do lagging left turns even create significant delay for cars? They get the same amount of time, just in a different place in the signal cycle.
robmausser
Senior Member
there are currently speed restrictions though all intersections.
duffo
Active Member
As many have noted, a lagging left does nothing inherently to speed up transit. Just as the left turn phase is the same amount of time, so is the transit green phase. This is just a re-ordering of phases. If the train arrival at the intersection is randomly distributed, consistently re-ordering phases will not improve the average travel time improvement.
To be effective, it needs to be dynamic, with phase insertion/red truncation/green extension only when trains are at/approaching the intersection.
adys123
Active Member
The implementation they have been testing on Spadina (which is likely the same as on Eglinton) is phase rotation - if it detects an LRV, it rotates the left turn phase to be lagging, but normally operates in the leading phase. This is not lagging or leading left exclusively.
duffo
Active Member
There was some discussion on other channels that, at least on Eglinton, the current setup is a consistent lagging left. But I haven't been out there to check myself.
SaugeenJunction
Senior Member
This is correct. TTC has equipment on order that will enable proper phase rotation at a later date.