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Start all of your commands with a comma

https://rhodesmill.org/brandon/2009/commands-with-comma/
141•theblazehen•2d ago•41 comments

OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
668•klaussilveira•14h ago•202 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
949•xnx•19h ago•551 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
122•matheusalmeida•2d ago•32 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
53•videotopia•4d ago•2 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
229•isitcontent•14h ago•25 comments

Jeffrey Snover: "Welcome to the Room"

https://www.jsnover.com/blog/2026/02/01/welcome-to-the-room/
16•kaonwarb•3d ago•19 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
222•dmpetrov•14h ago•117 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
26•jesperordrup•4h ago•16 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
330•vecti•16h ago•143 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
494•todsacerdoti•22h ago•243 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
381•ostacke•20h ago•95 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
359•aktau•20h ago•181 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
288•eljojo•17h ago•169 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
412•lstoll•20h ago•278 comments

Was Benoit Mandelbrot a hedgehog or a fox?

https://arxiv.org/abs/2602.01122
19•bikenaga•3d ago•4 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
63•kmm•5d ago•6 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
90•quibono•4d ago•21 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
256•i5heu•17h ago•196 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
32•romes•4d ago•3 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
43•helloplanets•4d ago•42 comments

Where did all the starships go?

https://www.datawrapper.de/blog/science-fiction-decline
12•speckx•3d ago•4 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
59•gfortaine•12h ago•25 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
33•gmays•9h ago•12 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1066•cdrnsf•23h ago•446 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
150•vmatsiiako•19h ago•67 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
149•SerCe•10h ago•138 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
287•surprisetalk•3d ago•43 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
182•limoce•3d ago•98 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
73•phreda4•13h ago•14 comments
Open in hackernews

Rolling Highway

https://en.wikipedia.org/wiki/Rolling_highway
55•taubek•9mo ago

Comments

burnt-resistor•8mo ago
Makes you wonder if there are 8+ axle road trailers for rail cars. Wouldn't that be some transception to place a trailer on a rail car on a trailer? ;D
bombcar•8mo ago
https://www.youtube.com/watch?v=uEWvw2JE3A4

If you can put a locomotive on a truck, you can put anything.

ProllyInfamous•8mo ago
Mesmerizing clip — the fact that the trailer's front control system requires a ground-walker, walking backwards, with the first set of wheels constantly nipping at his feet [OSHA?]. Thanks for sharing.
bombcar•8mo ago
There’s a whole subculture of “trucks moving huge objects” on YouTube - it’s a rabbit hole you can lose yourself in so thoroughly you start recognizing the equipment.
Animats•8mo ago
So there are ones besides Eurotunnel.

In the US, containers have won out. The other schemes - roadrailers, Trailer On Flat Car/piggyback, and some other strange approaches - have pretty much become obsolete. Double-stack container trains have maybe 4x the capacity of hauling an entire truck.

twobitshifter•8mo ago
Have they won out or has freight shifted to trucking from rail? Heavy, slow, and double stacked is the most efficient, but shippers look at more than a single factor.
bsder•8mo ago
Truck is about 30% more than rail, but they both move an awful lot of stuff: https://www.bts.gov/content/us-ton-miles-freight
Animats•8mo ago
If it came in on a container ship, and has a long way to go, the next step is often rail. This has led to "inland ports", in such places as Tucson, AZ and Columbus, OH, where the containers leave rail and go on trucks. In the US, it's not exactly "last mile" from there, more like last hundred miles.

Union Pacific's container trains are heavy, fast, and double-stacked. Once they get clear of the congested area around LA, they pick up speed.[1]

[1] https://www.youtube.com/watch?v=FHXhR8dhths

mcny•8mo ago
> container trains are [...] fast

I never imagined for a second that these things were going slow for our benefit (maybe safety, noise etc). I just had in my mind that they were simply incapable (technical reasons such as track or economic reasons like fuel efficiency) of going any faster.

So they could be speeding through the rail crossing instead of crawling at what feels like five miles an hour?

bgnn•8mo ago
I think I don't understand tge video, but isn't the train here very slow? I thought it would be minimum 100kph to be fast.
SoftTalker•8mo ago
One such "strange approach" was the Roadrailer

https://en.wikipedia.org/wiki/Roadrailer

gregoriol•8mo ago
Eurotunnel's system is very nice, but only works for a short journey: they don't provide space on those trains for passengers to relax, you stay in or near your car. This is perfect for 30 minutes, also makes faster loading/unloading, but can't work for longer journeys. Also because of this "stay near your car" thing, their trains are wider than usual trains in Europe, which makes it impossible for them to go anywhere except on that dedicated tunnel.

I'd love to see a solution that actually works almost like them but for longer trips: there is zero fun driving 1000km by the road when you need to go somewhere. It could be fun if you have time, but otherwise it's boring and tiring, would much prefer driving at the destination than on the journey.

globular-toast•8mo ago
The lorry drivers do have a separate cabin that they travel in. The cars are in completely enclosed double-decker carriages, but the lorries are open to the elements.
Animats•8mo ago
Less open to the elements now.[1] The lorries now ride Eurotunnel in cars with a solid roof and steel truss sides. The roof is to prevent projecting objects such as antennas from contacting the overhead power line (that's happened) and the open sides are to allow fire extinguishing (that's happened, more than once.)

Such are the practical problems of a "rolling highway" Eurotunnel has had to solve.

[1] https://www.youtube.com/watch?v=X8r0kjJvvIY

trhway•8mo ago
autonomous trucks may strike back. Especially when they would connect bumper to bumper into "truck trains" (fuel saving and increased bandwidth of a given highway)
Lammy•8mo ago
This article is focused on the freight aspect, but Amtrak operates a passenger Auto Train too. Danny Harmon has a great video about the unloading process: https://www.youtube.com/watch?v=fYlWBWlS4t0
SoftTalker•8mo ago
Very few routes (maybe only one) offer this, however.
giva•8mo ago
It's quite common for tunnels. Like the Eurotunnel or the Simplon tunnel.
SoftTalker•8mo ago
Yeah I was saying that about Amtrak specificially.
marcellus23•8mo ago
Amtrak only has the 1 route, called the Auto Train. It's itself a single route, there are no others.
ProllyInfamous•8mo ago
It goes from ~D.C.~ to Sanford, Florida [near Disney World].
InsideOutSanta•8mo ago
This is quite common in Switzerland. You can stay in your car for some of them, which is a pretty funny experience.
cyberax•8mo ago
This can really take off once self-driving matures. The _main_ problem with freight train is not their speed or the rail track throughput, but the time it takes to sort the train cars ("dwell time"). It's so bad, that the average car "speed" can be around 10 km/h. Or even slower.

And the railroads do not particularly care about optimizing their network, they are content to milk the bulk hauls for as much profit as they can. My friend worked at a startup that tried to pitch fully automated couplers to rail companies. They didn't care, even though it could have cut the dwell time significantly.

But if the improvements can be made on the _cargo_ side, then it's a different story.

SoftTalker•8mo ago
> They didn't care

I find that hard to believe, anything that could reduce time in transit and switching yard labor would be attractive. The process of assembling a train is far more automated today than it was in the past, so evidence does not support that they are content to just "milk" their current business.

tonyedgecombe•8mo ago
>I find that hard to believe

History is littered with complacent businesses that failed to innovate.

cyberax•8mo ago
> The process of assembling a train is far more automated today than it was in the past, so evidence does not support that they are content to just "milk" their current business.

Not really. If you take a railroad worker from the 1980-s, they would be able to work, with only minor training.

The dwell time actually _increased_. Rail companies are focusing on hauling bulk goods (coal, construction materials, oil, etc.) rather than trying to compete with trucks for fast delivery.

It's far easier to optimize for throughput than latency, after all. And rail companies are local monopolies, so they're doing whatever brings more money next quarter.

SoftTalker•8mo ago
> If you take a railroad worker from the 1980-s, they would be able to work, with only minor training.

The same could be said about computer programmers.

Trains and trucks serve two different markets. Trains are better for long hauls of bulk goods or containerized cargo where you have a lot of stuff all going from one place (e.g. a port) to another (inland distribution hub).

Trucks are good for "last-mile" local delivery or small loads/single containers going from one place to another.

cyberax•8mo ago
> The same could be said about computer programmers.

Not really. Programming has fundamentally changed since the 80-s: version control systems, connectivity, new and more efficient languages, etc. Train yards have not changed a bit. Dispatchers might have computers now, and individual train cars can be tracked in a central DB, but the physical work of coupling/decoupling cars and shuffling them around has not changed AT ALL.

> Trucks are good for "last-mile" local delivery or small loads/single containers going from one place to another.

The US is special, it's geographically HUGE, so trucks end up playing an outsized role in long-distance transport.

Trains are much cheaper and more efficient, so they can potentially help to reduce CO2 pollution _and_ the transportation cost. But train companies are just not interested in that.

Having self-driving trucks transported on the interchangeable flatbeds can potentially change that. Trucks can just drive onto the waiting traincars, ride to the destination location, and then just drive off the flatbeds.

cenamus•8mo ago
Self driving is much less important for the sorting process than new couplings (i.e. https://en.wikipedia.org/wiki/Digital_automatic_coupling)
cyberax•8mo ago
Yep. That startup tried to do something similar, except in a backwards-compatible way, and for American railroad standards.

In 2005. Train companies didn't care.

theendisney•8mo ago
I once ran into a website about some french industrialist who made a hundred drawings of roads and rail mixed with vehicles that looked like they belonged in some epic cartoon. Im sure his version would be a very long passenger or cargo train (probably both) with the roof exactly the height of the road. Trucks would drive onto the roof and park all the way to the front. Then the train would dive deep into the grounds because gravity is free.
bitwize•8mo ago
Before reading the article I was thinking/hoping this would be the kind of "rolling highway" described by Heinlein in "The Roads Must Roll"; think cross-country conveyor belts.
riffraff•8mo ago
Same for me, tho I thought of the flowing roads from Clarke's "the city and the stars"
floren•8mo ago
Completing the triumvirate, Asimov had them on Earth in the Robot novels
Calwestjobs•8mo ago
how much space we could save on highways if we have electric self driving trucks doing mile long convoys - self driving trucks can have short "safe distance" between them.

radars can be dual use - as radar and as communication device. 60ghz wifi has 10gbps speeds, line of sight only, so excellent for connecting columns of trucks.

cenamus•8mo ago
And then you still have each truck with an individual ICE, how is that better than an electric locomotive? (Yes I know, the rail network isn't nearly as electrised as much of Europe)

Still, I love seeing the swap bodies rolling up the passes in Austria.

LargoLasskhyfv•8mo ago
Hmm yummie! Even more tire dust of extra fine grade. Black marmalade. Tar Star Wunderbar!1!!

Not to mention more wear out of the highways.

preisschild•8mo ago
That would literally fix nothing. Moving long range trucking to electric rail actually does.
lqet•8mo ago
Now, if only truck drivers could remember switching off their truck's alarm system after rolling on one of these trains... every time they pass through here, at least one of the trucks has their alarm system going off at full blast.
Kaibeezy•8mo ago
THE ROADS MUST ROLL, by Robert A. Heinlein, 1940

https://ia601208.us.archive.org/32/items/calibre_library_178...