this post was submitted on 20 Aug 2026
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It's not wrong in the sense that an idling combustion engine is more polluting that one maintaining a speed. An ideal intersection is where all cars can smoothly interact without stopping, something only possible in the theoretical computer guided traffic crossings. Such places would have to have a pedestrian bridge nearby, as they aren't compatible with the slow human form.
So trains. You're describing light rail.
The average yank: “A what?!”
It means "just a little cocaine".
That doesn't seem like it would be enough cocaine
There will be a lot of light rails.
The most obvious solution to "idling combustion engine is polluting" is get rid of the combustion engine to the extent possible.
You would still have cars in that case, and combustion engines aren't the only cause of air quality reduction from cars. Tire wear puts a lot of carcinogens into the air as well at the very least, and I'm sure there are other things.
Yeah I agree 100%. There should be no personal cars in populated areas with very limited exceptions. It was just a sequitur on the premises of the OC.
Ped bridges take up a large area and are expensive. Also what if youre in a wheel chair?
They typically take the form of a ramp.
round about with a walk over bridge.
done annnnd done.
Ah yes, let’s force the non-motorised to climb stairs or make a minutes long detour!
I heard an electromagnetic catapult is about to become available, maybe there's another way to solve this. Gotta keep refreshing that GSA auction site.
ok so we could use pneumatic tubes to go places...
Futurama style?
Underground round about with a park on top.
What if youre in a wheel chair?
Dang, too bad no one's ever thought of that... Oh wait
Dang look at the size of them, its almost like you can't put them at every cross walk...
Oh and the cost isn't prohibitive, who would have thunk?
And it only increases the walking distance by a factor of 3. How efficient!
Why would every intersection need one?
Because people all need to get to different places, and walking/wheelchairing half a kilometre in one direction to access a bridge and then walk back sucks
Not every intersection is busy enough to warrant this.
I.e. not every pedestrian matters
If a road has one vehicle come by every hour, you expect a raised pedestrian bridge? A lighted crosswalk is totally fine.
Context matters, but exaggerate to make your point i guess.