superelevation
Active Member
The issue here is one of reasonable cost benefit, a well designed level crossing can be very safe - we just don't design reasonable crossings in NA! There are a lot of other measures that would provide more benefits, safety and otherwise than removing every minor level crossing on the southern ST line, and I live right near it and cross them frequently!There is no such thing as a “safe” level crossing….. well, maybe on the OBRY these days, but wherever train frequency is high, as it will be with RER, total grade separation is the proper goal, for both drivers and pedestrians. The limiting factor is simply how much money we can afford to spend at any point in time. As a matter of long term infrastructure planning, we should grade separate it all.
I’m very suspicious that the deferral of Scarborough Jct was not well thought out. It would be a multi year project that would constrain operations at a time when ML is almost ready to initiate 2WAD, and it’s big ticket item to boot. So much temptation for ML to say “hey, let’s not bother” when in a few years it may be badly needed…. I can’t see that junction performing well as a “flat” junction once train frequency rises.
Re Oncorr - clearly the trend has been for ML to do basic civil works itself. My suspicion is that Oncorr bidders don’t want to do this work because it takes them into controversial areas and potential delay/cost risks… a good example being the design for Small’s Creek. Vendors will not want to ride point on anything where there is public interface or contoversy - why should they? let ML and the pols answer to the public - and they will price anything that looks iffy much higher as they have less control over outcomes. Plus, it keeps them out of work that might cause them to add skills or workforce beyond their core focus. Once the roadbed is built (which is the source of controversy, and something that lots of local construction contractors do well) the Oncorr folks can focus on tracklaying, signalling, etc…. their core specialties. ML may have originally wanted to bundle it all, but found this division of roles cheaper and more expeditious overall.
- Paul
Rail systems across Europe and Asia, and numerous ones in NA do this. Calgary runs a better than 15 minute service on portions of its LRT with gates, its fine - design it well. We should focus on better stations, rolling stock etc.Regarding the Stouffville Grade Separations, not sure if this update has been posted here.
So it's the City that asked for more grade separations. Havendale will be closed and a pedestrian bridge is proposed.
It's correct that these grade separation projects are part of the OnCorr contract, but Metrolinx has prepared the EA's and TPAP's in anticipation.
There are also plans for Kennedy Rd and Denison St in Markham.
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Stouffville Line GO Expansion.What We're Building
Learn more about the stations and structures being built on the Stouffville Line.www.metrolinxengage.com
ML seems serious about making the Stouffville Line fully grade separated to Unionville. It's hard to imagine running frequencies of even every 15 min with boom gates going up and down, so I'm pretty sure they're all going to happen, but given how long it's taking Steeles, we can get an idea of when this is all going to be done.
I think the ST line service may not be as high as originally promised, sounds like 10 mins will be the max we are getting for the immediate rollout of electrification, but that doesn't matter much - clearly with double track and electrification more frequency should be achievable - if Metrolinx uses good signalling.IIRC Metrolinx is actually planning sub-10 minute frequencies on the Stouffville line, which triggered the need for it to be fully grade separated. There are lots of at-grade intersections planned to still remain along other parts of the 15-minute network, particularly on the Barrie Line.




