[reinventingthewheel]

if your engineers n programmers are really good.

you answered your own question

LOL. @Aplus23 I have two valuable lessons for you:

1. Pay peanuts – you get monkeys
Consider the high turnover rates, especially in software careers, and the comparatively lousy salaries offered here versus big tech companies over the last 15 years. With that we can’t make any assertions but we can suspect at least some lack of expertise, ownership and accountability.

Why would a signaling system built from the ground up be so difficult to implement?

2. If it ain’t broke don’t fix it
Choosing to deviate from proven designs inherits considerable risk. Successful design patterns come with a legacy of understanding and proven reliability. It can be a very expensive effort to achieve those same qualities in a refreshed design. This is why some critical systems still run software that is 40+ years old; the cost and risks outweigh the benefits of improvement.

 

[Undead]

Fom working in the industry for years, I can almost guarantee that the devs were like "Not crashing into other LRVs was never in the spec. You'll have to submit that req for the next sprint."

More like because business area didn't ask, asked at the last moment or don't know what they want

 

[Kyle Campbell]

Oscillation has been a recurring problem, but the LRT vehicles are different from the streetcar ones, and their infrastructure's very different, too.

Ottawa's Citadis trains don't really have this issue, so I don't think it's a general low floor thing. Although the Citadis really grinds around even the most gentle curve. Hopefully the crosstown Flexities are smoother

 

[unrealestate]

Ottawa's Citadis trains don't really have this issue, so I don't think it's a general low floor thing. Although the Citadis really grinds around even the most gentle curve. Hopefully the crosstown Flexities are smoother

yea ottawa's are really unpleasant, mainly due to the bad route design that has so many curves. crosstown is nearly a straight shot the whole way. I do worry about the number of curves on the ontario line

 

[T3G]

Ottawa's Citadis trains don't really have this issue, so I don't think it's a general low floor thing. Although the Citadis really grinds around even the most gentle curve. Hopefully the crosstown Flexities are smoother

You don't have to hope - the same cars as used on the Crosstown are in service on ION and they ride very well around the high speed curves. I assume it's to do with the track geometry.

 

[asher__jo]

I think its hilarious that people are debating retrofitting or building new tunnels/building new bridges, for a line that has taken 13+ years to be built, and isn't even open yet...

Yup. Lessons learned from this project, but there will be many positives once it is operating.

 

[unrealestate]

2025 should be a big year. St Lawrence north market, Eglinton, Finch

 

[stevedean]

2025 should be a big year. St Lawrence north market, Eglinton, Finch

optimistic of you Many people probably made that exact prediction for 2024, and yet here we are...

 

[ARG1]

You don't have to hope - the same cars as used on the Crosstown are in service on ION and they ride very well around the high speed curves. I assume it's to do with the track geometry.

iON has high speed curves? I can't think of many curves that iON has (even relatively gentle ones) where the train doesn't slow to like 20km/h.

 

[ZEBuilder]

iON has high speed curves? I can't think of many curves that iON has (even relatively gentle ones) where the train doesn't slow to like 20km/h.

The only real place along the ION line where it takes a curve at speed is along the previous freight right of way between Uptown and Northfield. Even then it's such a gradual curve that it's barely noticeable.

The curves aren't even the biggest issue with the ION its the lack of TSP. It does have some priority but when you take it ever day you notice cars are still king everywhere along the line. There's also some really weird signal blocking which forces trains to slow way before it makes sense, if they don't slow the ATP system kicks in and the train emergency brakes, it doesn't happen often but when it does you go flying, however it happens enough that some people noticeably brace themselves expecting it to happen.

 

[T3G]

iON has high speed curves? I can't think of many curves that iON has (even relatively gentle ones) where the train doesn't slow to like 20km/h.

Having only ridden on it end to end once, I couldn't point out any locations on a map, but there were a number of places along the northern end where the train banks without slowing down from line speed at all - and line speed up there is fairly respectably high.

 

[ThenWhat]

getting close

 

[IBlack1]

Gotta be in March

 

[zang]

Gotta be in March

Naw…


Sorry, couldn’t resist.

 

[stevedean]

Gotta be in March

you didn't say which year