iiinova — where your digital self keeps evolving

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 17h

The PBO's cost estimate is the result of a weekend spent playing around with the Transit Costs Project spreadsheet and some typesetting. There is ~0 special insight and treating it as authoritative is silly

1146

Reposted by kaptrice 🐦‍⬛

Mike F @mikefeaver.bsky.social · 27/09/2026

With the increasing length of the Expo Line, people often bring up the idea of making the SkyTrain faster by adding skip stop or local/express service patterns In short, local & express services should be possible with additional platforms at 4 stations This thread explores one way to do that

A map depicting Vancouver's SkyTrain network showing all lines with some form of local & express stopping pattern, also showing connecting RapidBus, planned RapidBus, B-Line, SeaBus, and SFU Gondola

4368

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 26/09/2026

Somehow, high-speed trains feel really huge when they operate on ordinary trackage.

070

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 26/09/2026

Gyeongui-Jungang commuter trains, ITX-Cheongchung, and KTX-Eum trains share the double tracks. It's fun seeing them side by side.

1235

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 19/09/2026

Gyeongbu line and Gyeongbu HSL racing out of the platforms at Daejeon

020

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 10/09/2026

have you ever wanted a technical treatise on design of urban railways in the south korea context? i haven't either, but now i'm interested

051

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 06/09/2026

Six tracks of Hangang bridge at the end of summer

050

Reposted by kaptrice 🐦‍⬛

Mac the squirrel :) @macsquirelera.bsky.social · 12/08/2026

Canada, unlike the US doesn’t have infinite money to waste so you’d think someone would care to do some cost control on projects but alas

5602

Reposted by kaptrice 🐦‍⬛

JackTatt 🇨🇦 @jacktatttran.bsky.social · 17/07/2026

Exciting news: TTC has awarded a contract to Hitachi for its SelTrac communications based train control (CBTC) on line 2 (according to the announcement, including on Metrolinx’s Scarborough Subway Extension). This will enable reliability, speed, and frequency improvements. @ttcriders.bsky.social

ttc.ca

TTC awards contract for Line 2 signalling upgrade to support more frequent and reliable service

2111

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 02/06/2026

Q1 2026 USCA commuter rail ridership update: - RTO policy is bringing up ridership overall - Caltrain electrification has grown ridership 70% - Only GO has exceeded prepandemic numbers; ridership grew 8.5% while local transit ridership fell ~5%

1142

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 29/05/2026

It's been a couple years but I want to start writing Wikipedia pages for the London Clay birds again

010

Reposted by kaptrice 🐦‍⬛

Alberta Claw @albertonykus.bsky.social · 29/05/2026

Review of Eocene birds from the Walton Member of the London Clay Formation in England: onlinelibrary.wiley.com/doi/10.1002/... 🪶🧪 (📷Mayr)

Fossilized foot bones of a variety of extinct birds shown to scale, all discovered in the London Clay rock formation in England.

0204

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 24/05/2026

Beside the viaduct carrying the Harbin-Qiqihar HSL and Harbin-Manzhouli railway through central Harbin there's a commemorative hall for the China Eastern Railway. The railway defines Northeast China the way the way the CPR does Western Canada and almost single-handedly drove its settlement.

130

Reposted by kaptrice 🐦‍⬛

Nilo @nilo.bsky.social · 24/05/2026

This is really the key question with respect to railroads in all countries that were industrialized before wwii. So few places and people have ventured an actual answer to this question in the last century though. Beeching and Spinetta ventured one answer; the DACH countries have tried another

2142

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 22/05/2026

For Canada I feel this is Montreal because the REM took the tunnel and the second tunnel will almost certainly be filled with high-speed intercities. Maybe connecting Mont St Hilaire to Lucien L'Allier but that also is a new bridge/tunnel.

361

Reposted by kaptrice 🐦‍⬛

sick public transit, gloria @seung.bsky.social · 21/05/2026

think Hyundai's extremely deep involvement in the Samseong Station mega-project -- part of a giant Hyundai-fication in the area -- is very interesting in itself. quite exemplary on how Seoul's urbanism gets built out and up, and the negotiations that come with it www.koreaherald.com/article/1065...

koreaherald.com

How Hyundai Motor's ambitious GBC project finally moved forward

Following more than ten years of delays, redesigns and contentious negotiations, Hyundai Motor Group’s stalled headquarters project in southern Seoul has finall

1122

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 13/05/2026

i got the book. more fushun electric railway knowledge is Coming

030

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 07/05/2026

sitting down to dinner to be served with the mantetsu plates

010

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 28/04/2026

Changchun-Harbin(?) express passing through Shuangchengpu station

011

Reposted by kaptrice 🐦‍⬛

sick public transit, gloria @seung.bsky.social · 08/04/2026

excellent, comprehensive examination into Japan's railway successes by @borners.bsky.social ky.social and @carto-graph.bsky.social. was flattered they linked to a couple of my Japan railway history posts on Substack to reinforce their many good points worksinprogress.co/issue/why-ja...

worksinprogress.co

Why Japan has such good railways - Works in Progress Magazine

Japan's railways are the finest in the world. Other countries can copy its formula.

27117

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 08/03/2026

Thinking about Toronto's trains: every delivery to Davisville or Greenwood (i.e. every train from 1954 to 2001) was by rail, but the TRs, which arrived at Wilson, weren't. Streetcars have always arrived by rail to Hillcrest, and Line 5 LRVs by rail to EMSF.

110

Reposted by kaptrice 🐦‍⬛

Bjorn @zmapper.bsky.social · 26/02/2026

This, continual procurement, is the one reform to US federal vehicle procurement I want. We need structures that allow continual fleet renewal at 1/x lifespan, not bulk purchases every 30 years that inherently have big issues.

131

Reposted by kaptrice 🐦‍⬛

JackTatt 🇨🇦 @jacktatttran.bsky.social · 26/02/2026

My research article “Quantitative Method for Assessing the Quality of Intermodal/Interagency Connections and Service Integration at Suburban Rail Stations” has been published in the @trb.org Transportation Research Record. This is based on my MASc @uoft.me on coordination between transit services.

Minimum connection times (minimum time to change between transit services) calculated from OpenStreetMap

Percentage of connections which are convenient (no more than 10 minutes waiting after reaching connecting stop). Presented for GTFS RealTime data on April 5, 2023 for GO Train station connections in the GTHA Transit network.

Percentage of connections which are convenient (no more than 10 minutes waiting after reaching connecting stop). Presented based on GTFS schedules for January 9, 2024

The convenience of transfers between GO Train services and connecting buses presented by route and direction at Bramalea GO Station using realtime data.

1276

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 26/02/2026

How is commuter rail in the US and Canada faring? It depends! In terms of ridership recovery, Toronto, Boston, and the LIRR lead, while Chicago and Los Angeles lag far behind. Caltrain modernisation has brought the system far ahead of it's region's metro, BART.

130

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 26/02/2026

North American commuter rail ridership through 2025 shows a couple of upwards trends: -LIRR benefitting from expanded City Ticket, congestion pricing, ESA. -GO improved off peak service. -Caltrain reinvigoration

020

Reposted by kaptrice 🐦‍⬛

Stephen Jacob Smith @stephenjacobsmith.com · 25/02/2026

The discussion about "modular" construction would be a lot more lucid if we viewed it as an extreme on the prefabrication spectrum. There's lots of prefab already viable (like this!) – and we can make it more viable!

1502

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 23/02/2026

waiting so diligently for the analyst at APTA to upload the q4 ridership report so i can know how canadian systems are holding up

060

Reposted by kaptrice 🐦‍⬛

ArtButMakeItSports @artbutmakeitsports.bsky.social · 22/02/2026

Suprematism, by Nikolai Suetin, 1920-21, 📸 by @tiltoncreative

6199422257

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 22/02/2026

And before the wars, Korea strangely functioned as an agri-colony of Japan, where much of the rice crop was exported for Japanese consumption and the lost calories substituted with Manchurian coarse grain imports.

2111

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 18/02/2026

www.youtube.com/watch?v=4OkB... Toronto in 8mm. Line 1, Line 2, Line 5, Kitchener Line and UP Express.

youtube.com

toronto in the evening

YouTube video by subzi

010

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 17/02/2026

when the eglinton line was conceived, 8mm video was fading but still in broad use. so, here's eglinton on tape

180

Reposted by kaptrice 🐦‍⬛

#1 Shoup Fan @oneshoup.bsky.social · 13/02/2026

This issue actually destroyed US transit. So many trams might still exist if there had been a 7.5¢ coin in 1920

2467

Reposted by kaptrice 🐦‍⬛

sick public transit, gloria @seung.bsky.social · 14/02/2026

Sewoon Sangga has been long an obsession of mine. A massive complex of brutalist shopping mall buildings which span four wide blocks in a straight north-south line from Jongmyo Shrine to Namsan Mountain, it pioneered the Seoul as we know it -- and has lived many lives during its steady decline 🧵

The Sewoon Sangga buildings in a straight line to each other. Smaller buildings are crammed adjacent to the complex; skyscrapers are located a stone’s throw away. (Source)

2164

Reposted by kaptrice 🐦‍⬛

Alberta Claw @albertonykus.bsky.social · 14/02/2026

Review of the diet of troodontid dinosaurs: onlinelibrary.wiley.com/doi/10.1002/... 🪶🧪 (📷Fan et al.)

Diagram showing the evolutionary relationships among troodontid dinosaurs and variation in their tooth structure.

0255

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 13/02/2026

the Fushun municipal government proposed reviving the old local electric railways as part of an integrated (light?) rail loop, integrating with the old Shenyang-Jilin railway, for the 14th 5 Year Plan. It looks ridiculous on a map. corridor reuse final boss

010

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 12/02/2026

It took English consultants to get Toronto to come up with anything that wasn't this. There was some diminishing returns over the years, Bloor had 150 streetcars for peak service but Eglinton only 80 busses before they got their subways.

160

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 04/02/2026

i feel like you see this when contrasting cities in china and the upper-middle ASEAN gang. the latter are richer but provision less space per capita, less rapid transit, and exist at lower lower densities

240

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 04/02/2026

chinese T1s have vastly higher floor space per capita as well as population density than Tokyo. but they would be so much better with japanese surface rail

0171

Reposted by kaptrice 🐦‍⬛

justin taylor 🚄🎵🔋🌈 @nottaylorx.bsky.social · 02/02/2026

missed another light cycle westbound at Atlantic because of the restricted speed policy under underpasses. This outdated policy was due to trolley poles losing contract with the overhead during elevation changes. We don't have trolley poles on tbe network anymore!!

2293

Reposted by kaptrice 🐦‍⬛

justin taylor 🚄🎵🔋🌈 @nottaylorx.bsky.social · 02/02/2026

this isn't shit that TSP alone can fix!!! Our dated infrastructure and nonsensical procedures are some of the biggest hindrances to efficient service. there should be ZERO reason two streetcars can't be crossing the same intersection at the same time in our holy year of 2026

1232

Reposted by kaptrice 🐦‍⬛

Nilo @nilo.bsky.social · 31/01/2026

It’s interesting how many people seem to think subway and bus riders are entirely distinct communities and not the same one that people back and forth between.

91188

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 16/01/2026

The original Tokyu 7000 series only has articles on the Japanese and Korean Wikipedias, which surprises me, given it was Japan's first production all-stainless train

010

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 15/01/2026

I reaaaally want them to use the Don branch and Belleville subdivision to enter Toronto, not because I think it would lead to better project outcomes but because the aesthetics of trains gliding over the Don Valley there would be good.

030

kaptrice 🐦‍⬛ @kaptrice.bsky.social · 15/01/2026

Old hand-written timetable signs show a substantial but not huge passenger service. It's hard to find any historical schedules, so I don't know how the service level evolved over time.

110