Behold my favorite #traffic calming device.
@davidho @milgrim how does this work, like what am I missing?
@cleatsandcode @davidho the space is so narrow any cars have to drive slowly through the bollards or risk damage to their shiny automobile. Particularly fun in my opinion is that larger cars have to be even more careful
@milgrim @cleatsandcode @davidho are we, as a species losing our sense of spatial awareness? Looks like no problem to me.

@DanadasGrau @cleatsandcode @davidho I don't think so. It takes quite the confidence to go faster than 2-3mph through metal bollards with 12inches/30cm clearance either side. That would be a quick way to lose your mirrors in the best case.

I've seen them work very effectively in Cambridge, UK where they seem to be primarily used to keep large volumes of through traffic from abusing quieter residential city streets.

@milgrim @DanadasGrau @cleatsandcode @davidho I think it's really interesting in terms of how it shifts the risk for imprecise driving to the motorist. Those drivers are going through spaces that width at 20-30mph the rest of the time without batting an eylid but when they're the ones who'll come off worse form a collision their speed drops right down.
@milgrim @DanadasGrau @cleatsandcode @davidho Well, the average human's spatial awareness is actually rather embarrassing. That's why these bollards work.

@yacc143 @milgrim @DanadasGrau @cleatsandcode @davidho Yeah. I dove a 1978 Ford Econoline Chateau Club all through high school I'm like "what is the problem here"?

Thing was the size of an aircraft carrier and I fit that thing anywhere.

@tezoatlipoca @yacc143 @milgrim @cleatsandcode @davidho my first car was a β€˜76 Monte Carlo. Now I am driving a β€˜05 Toyota echo. I could probably set the Toyota on the hood of that Monte Carlo with room to spare.
@DanadasGrau @tezoatlipoca @yacc143 @milgrim @cleatsandcode @davidho '72 Chevy Blazer here. Reminds me of passing on mountain trails with steep drop-offs. You get pretty good, but when in doubt, it helps to have a spotter.
@tezoatlipoca @milgrim @DanadasGrau @cleatsandcode @davidho
Well, I do have to admit that it helps that I learned with upper class cars. European ones, so they cannot compete with America land based aircraft carriers, but still.
@DanadasGrau @milgrim @cleatsandcode @davidho I don't think it's genetic. It appears to only infect people who drive SUVs.

@Captain_Bleuten @johnmclear @DanadasGrau @milgrim @cleatsandcode @davidho

A lot of SUV's have the driver sitting in a pit. It is really hard to see over the edge of the perimeter.

It's actually easier to see out of some vans, where the driver is seated high for visibility and closer to the front edge of the vehicle.

@johnmclear @DanadasGrau @milgrim @cleatsandcode @davidho

Correlation and causation: did buying a SUV make them lose spatial awareness, or did they buy a SUV due to not having spatial awareness?

@milgrim @cleatsandcode @davidho But drivers know that the bollards must be wide enough for normal cars, so all they have to do is miss the driver's side bollard with the driver's side wing mirror by a couple of cm, and be driving straight, and they haven't got a problem. There's no need to worry about the other side of the car.
@TimWardCam all true, but there’s direct video evidence of drivers slowing down. Crazy huh

@milgrim @TimWardCam every left lane on the autobahn in Germany when there is a construction site going. We're really used to this and even overspeed all the time. We as in my fellow Germans.

Nobody here would bat an eye on that πŸ˜… No I'm not proud on that. Our car density is simply insane.

@bekopharm @milgrim Only a very basic understanding of fluid mechanics is needed to realise that if the number of lanes on the road drops from two to one due to roadworks/construction what's needed is for everyone to drive TWICE AS FAST through the narrow bit, that way there's no queuing.
@TimWardCam @bekopharm @milgrim wait. Does this mean that what we need to solve traffic wasn’t one more lane, but simply for everyone to go 800km/h all the time?
@halcy @TimWardCam @bekopharm @milgrim

If no one was allowed to turn and all merging, splitting, and exiting was perfectly efficient then yes. Turning on noclip could also work.

@o76923 @halcy @bekopharm @TimWardCam @milgrim

> if no one was allowed to turn and all merging, splitting, and exiting was perfectly efficient then yes

There's a word for that in English; I believe it's "train"

@o76923 @halcy @bekopharm @milgrim @notNapoleon I used to like trains, but sadly they're not usable at the moment because no operator chooses to offer a guaranteed zero covid journey.

@TimWardCam @milgrim dunno, our autobahn has usually 3 lanes and a construction site may reduce that to two.

The left one is the one which is usually _way smaller_ in that case.

Don't think the concept of a single lane is known here.

**This note may be full of sarcasm.**

@TimWardCam @bekopharm @milgrim exactly. This is also why adding more lanes makes traffic move slower
@Rhodie114 @TimWardCam @bekopharm @milgrim That's because new lanes are added to the right and not to the left of the old lanes, i. e. the right one is almost emptyπŸ˜‰
@grauzone @Rhodie114 @bekopharm @milgrim In the UK there's a rule that you're allowed to overtake on the wrong side if you are moving in heavy traffic and your lane happens to be moving faster than the others. I interpret a completely empty left hand (in the UK) lane to be moving as fast as I like when the others are congested.
@TimWardCam that's only up to 60 km/h max. Tho I'm not sure if you brexited that away already πŸ™ƒ
@bekopharm The UK version of that rule would never have been expressed in km/h.
@TimWardCam no idea what that is in freedom units. Heck you're even driving on the wrong side 😜
@bekopharm But we are not, as many seem to believe, the only country in the world that drives on the "wrong" side. https://en.wikipedia.org/wiki/Left-_and_right-hand_traffic
Left- and right-hand traffic - Wikipedia

@TimWardCam @bekopharm I like β€˜freedom units’
@TimWardCam @grauzone @Rhodie114 @bekopharm @milgrim Similar rule in Germany: You can pass on the right if traffic is dense, vmax is 80km/h and vmax_delta is 20km/h.
Still Β§1 applies - and I really like that part of our road traffic regulations, though it needs to be enforced better:
https://www-gesetze--im--internet-de.translate.goog/stvo_2013/__1.html?_x_tr_sl=de&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=wapp
Β§ 1 StVO 2013 - Einzelnorm

@TimWardCam @bekopharm @milgrim Only a basic understanding of fluid mechanics is needed to realize that a bunch of moving cars don't behave like fluid. Cars (and also mainly the space between them) are compressible, so you have to apply particle dynamics here, which is a whole different story.
@bekopharm @chotten @TimWardCam @milgrim the space between cars is called headway and is measured in seconds.
@bekopharm @milgrim @TimWardCam this is Johan Cruyff logic. His solution to traffic congestion was to abandon all speed limits on the motorways.
@Tomasso yeah.. and mandatory spikes on the dashboard would probably help too.

@bekopharm @milgrim @TimWardCam Not true. I know a few spots im germany where they had to bollard off old bridges to keep heavy traffic away. You're either going slow or you're paying for repairs. It's not the same as on the autobahn.

https://www.youtube.com/watch?v=0Cgt4qXk8v4

Realer Irrsinn: Hochsicherheits-PontonbrΓΌcke bei Bochum | extra 3 | NDR

YouTube
@mithos @milgrim @TimWardCam heh, the only thing there that is keeping drivers in check is the automated ticket dispenser (or photo booth) :P

@bekopharm @milgrim @TimWardCam The bridge had bollards long before they added those photo booths. This was just another episode in a longer history around this narrow bridge.

I also knew a street in hamburg with bollards to keep trucks away. Same situation there, germans are not better drivers than anywhere else.

@mithos who said that? o0 Our driving and car obsession is batshit crazy.

I still do not get what you want from me now. What have trucks to do with this? Or weight? Wasn't this about cars squeezing everywhere without batting an eye?

@bekopharm @milgrim @TimWardCam
Sorry this might be true for some drivers, but often you see a modern car (which are all so f*** wide) whose driver blocks the left lane, because (most of the time) he is afraid to overtake on a narrow lane, but can't accept to use the slow lane.
@milgrim @TimWardCam Not crazy at all, they drive vehicles whose characteristics they simply don't grasp. Not necessarily a good sign.
@TimWardCam @milgrim @cleatsandcode @davidho true, but that would require that all drivers think logically. Instead they think "my car, my car, my car, ahahaha"

@TimWardCam @milgrim @cleatsandcode @davidho this is not true, because cars come in this street not perfectly aligned with its axis. It's wide enough for a normal car going straight, but the car needs to be perfectly aligned with the street prior to crossing the bollards, not worry about solving the alignment later.

(Correction: i see you mentionned that they have to be driving straight, but doing that immediately after a turn is the hard bit)