O-Train Line 2/4 [Stage 2 | Greenboro to Limebank/Airport] | In Service

[J.OT13]

Derek Ellis
@deellisd

I think the blasting for this station might be all done #ottLRT


https://twitter.com/deellisd/status/1294417314574737409

7:35 PM · Aug 14, 2020·Twitter for Android

https://twitter.com/deellisd/status/1294417314574737409

[J.OT13]

City of Ottawa update on Trillium:

https://mailchi.mp/717b6b625db4/o-train-...construction-update-1044292?e=a999a549a3

[PHrenetic]

Good Day.

A slightly more comprehensive description of the work in Dow's Lake Tunnel specifically:

Project Spotlight: Upgrades for the Dows Lake Trillium Line Tunnel

https://ottawa.ca/en/planning-developmen...-upgrades-dows-lake-trillium-line-tunnel

EnJoy!

[qprcanada]

Originally Posted by PHrenetic

Good Day.

A slightly more comprehensive description of the work in Dow's Lake Tunnel specifically:

Project Spotlight: Upgrades for the Dows Lake Trillium Line Tunnel

https://ottawa.ca/en/planning-developmen...-upgrades-dows-lake-trillium-line-tunnel

EnJoy!

What are the two inner rails on the track for that are shown in the photo ?

[OCCheetos]

Originally Posted by qprcanada

What are the two inner rails on the track for that are shown in the photo ?

They're guard rails: https://en.wikipedia.org/wiki/Guard_rail_(rail)

[J.OT13]

Update video from OC Transpo.

• Video Link

[J.OT13]

I did not realize there was a FEDCO meeting today. Presentation can be found on O-Train Fans, with plenty of images, far more for Trillium than on the video.

https://otrain.railfans.ca/news/stage-2-lrt

[OCCheetos]

I noticed that in the PA there's an Operations Service Plan titled "Trillium Interim Substantial Completion - Bayview to Greenboro Only".

I guess they're prepared for the possibility of having to partially open the line, although tbh if any part is going to hold up the relaunch of the line it'll be the Bayview to Greenboro section.

Of note, it says that 5 trains would operate on this schedule instead of the 4 we're used to. My guess is that trains would dwell at Bayview and alternate platforms or something.


Also, no more 15 minute operations. It'll be 12 minutes at all times which means that there will be times that the Trillium Line operates more frequently than the Confederation Line. Everyone complaining about frequency can shut up now!

[caboose]

Originally Posted by OCCheetos

I noticed that in the PA there's an Operations Service Plan titled "Trillium Interim Substantial Completion - Bayview to Greenboro Only".

I guess they're prepared for the possibility of having to partially open the line, although tbh if any part is going to hold up the relaunch of the line it'll be the Bayview to Greenboro section.

Of note, it says that 5 trains would operate on this schedule instead of the 4 we're used to. My guess is that trains would dwell at Bayview and alternate platforms or something.


Also, no more 15 minute operations. It'll be 12 minutes at all times which means that there will be times that the Trillium Line operates more frequently than the Confederation Line. Everyone complaining about frequency can shut up now!

Restoring service to Carleton University as soon as possible is probably one of the biggest factors.

[J.OT13]

I would love to see Stage 2 Trillium operate from Bayview to Greenboro only for a few weeks/months, so we can really see the impact of the additional suburban service and airport spur.

[TransitZilla]

Originally Posted by OCCheetos

I noticed that in the PA there's an Operations Service Plan titled "Trillium Interim Substantial Completion - Bayview to Greenboro Only".

Thanks for sharing... what I find interesting are the preceding 4 pages which break down the Bayview-Limebank and South Keys-Airport service...

Bayview-Limebank:
Round-trip run time = 62 minutes
So, One-way run time = 31 minutes

South Keys-Airport
Round-trip run time=15 minutes
So, One-way run time = 7.5 minutes

Those numbers seem a lot more reasonable than what was indicated earlier by the Stage 2 office.

[J.OT13]

Originally Posted by bradnixon

Thanks for sharing... what I find interesting are the preceding 4 pages which break down the Bayview-Limebank and South Keys-Airport service...

Bayview-Limebank:
Round-trip run time = 62 minutes
So, One-way run time = 31 minutes

South Keys-Airport
Round-trip run time=15 minutes
So, One-way run time = 7.5 minutes

Those numbers seem a lot more reasonable than what was indicated earlier by the Stage 2 office.

Here are those numbers provided by the Stage 2 office again:

Bayview-Limebank 37 mins
Bayview-South Keys 25 mins
South Keys-Airport 13 mins

Yup, the report provides far better run-times.

[Truenorth00]

I wonder how much twinning and electrification could improve speeds in the future. These speeds basically make it a 1 hr commute from Riverside South, with the feeder bus ride. Even a small 5-6 min improvement would be impactful here.

[J.OT13]

Originally Posted by Truenorth00

I wonder how much twinning and electrification could improve speeds in the future. These speeds basically make it a 1 hr commute from Riverside South, with the feeder bus ride. Even a small 5-6 min improvement would be impactful here.

Not sure about electric vs diesel, but twinning would result in significant improvements with trains no longer having to wait at passing tracks for the previous train to go by.

[TransitZilla]

Originally Posted by J.OT13

Not sure about electric vs diesel, but twinning would result in significant improvements with trains no longer having to wait at passing tracks for the previous train to go by.

Really the only place that will happen is at the Brookfield siding though...twinning Walkley station (so the trains pass each other there instead) might save a couple minutes on the round trip?

[Truenorth00]

Electrification should normally save 10-20s per station, enough to add up to 2-3 minutes over the whole route. Added in 2-3 minutes from twinning and Bayview to Limebank could be brought down to 25 mins. Enough to make a commute from Riverside South to most of downtown Ottawa about an hour. Right now, it's easily over an hour.

[caboose]

Originally Posted by Truenorth00

Electrification should normally save 10-20s per station, enough to add up to 2-3 minutes over the whole route. Added in 2-3 minutes from twinning and Bayview to Limebank could be brought down to 25 mins. Enough to make a commute from Riverside South to most of downtown Ottawa about an hour. Right now, it's easily over an hour.

what would be the cost of electrification of the line?

[TheMatth69]

Considering the fact that the FLIRTs are Diesel-Electric and powered by a power pack, there's virtually no difference between the performance of a FLIRT in electric mode and the ones we're going to have. Even the noise they generate when accelerating will be very similar (almost). However different story for the LINTs.

[J.OT13]

Originally Posted by TheMatth69

Considering the fact that the FLIRTs are Diesel-Electric and powered by a power pack, there's virtually no difference between the performance of a FLIRT in electric mode and the ones we're going to have. Even the noise they generate when accelerating will be very similar (almost). However different story for the LINTs.

Right, the FLRT is an electric train powered by an onboard diesel generator and not a diesel train in the traditional sense like the LINT or Talent. That's always been my interpretation.

[Truenorth00]

The GO train locos are diesel-electric. Their math on electrification had notable speed gains. Why would it be different in Ottawa? EMUs have more traction and accelerate quicker. This is known. The question on benefit is one of station spacing. GO benefits because stations are 5 km apart. At 2-3 km apart, the savings for Trillium won't be be more than 10-20s per stop.

Acceleration would be an ancillary benefit of electrification. Not the reason for it.