What are these concrete walls for?
Jannies PLEASE
Ostensibly to prevent 160-mph head-on collisions, but mostly to peel tires off of semi-truck rims and smash doors of ricers.
>>1278212Your board has no sticky and I thought it was the right board for my question.
>>1278216It is. Urban planning discussion goes here. He is probably one of the morons who thinks any picture with a car is off topic.
>>1278210wow 3 seconds on internet searchhttps://en.wikipedia.org/wiki/Median_stripsage
ITS NOTHING BUT A TUBE
>>1278210To prevent people from flying into ongoing traffic.If you will try to do it it will automatically kick you back.
>>1278236>it it will automatically kick you back.But how does it know?
>>1278237Special form. https://www.youtube.com/watch?v=WG89EmezYts
https://www.youtube.com/watch?v=CBrPVmuGp2UHere is more.
>>1278217I think it's an extremely low quality post with an obvious answer.
Parapets that let you actually see off the bridge are better than concrete barriers
>>1278248Maybe, but concrete one is better that none. Also it is smaller, thus can be retrofitted everywhere.
>>1278217>>1278245Urban design, transport planning, and road engineering goes here, but OP is extremely low quality and should be shamed for his stupid and slothful question. There's not an attempt to compare, discuss, analyze, or ask details and specifics. >>1278248>see off the bridgeYou aren't supposed to look that way. I like cable barriers.
>>1278268Cable barriers are absolutely not bike friendly.
>>1278268>You aren't supposed to look that way.Fuck you!
>>1278270They're more costly to install and more labor-intensive to repair.They will decapitate a motorcyclist.
>>1278280Why are they installed in highway medians instead of metal guard rails?
>>1278270Thats why i like them
>>1278280Yes, but you can retrofit them everywhere.>>1278284Space and shit.
>>1278238>a guy got paid to drive that truckI wish my job was that fun
>>1278289>Space and shit.What?
>>1278270>>1278280>They will decapitate a motorcyclist.I see mixed conclusions. It doesn't seem significant.
>>1278220this post is chronically underrated
Cor-ten or weathering steel rusts to a certain point, then stops. I wish they used it on guard rails more often because it blends in with trees and whatever else is on the side of the road in rural areas compared to conventional galvanized guard rails. I presume it's a lot more expensive than galvanized.
>>1278210 (OP)Same purpose these metal barriers are for.
>>1278210To decrease severity of crashesFuck off to >>>/o/
>>1278598It can protect even buses
>>1278605Yeah let's discuss best practice in physical segregation of bike and bus lanes in /n/ right.
I wish it was practical to do this on a larger scale. You could make more lanes available for rush hour each way without adding more lanes.
>>1278560It doesn't stop:https://www.google.com/url?sa=t&source=web&rct=j&url=https://galvanizeit.org/uploads/publications/Galvanized_Steel_vs_Weathering_Steel.pdf&ved=2ahUKEwjlt4e3no7gAhWs1VkKHZ2yAA8QFjABegQIDRAE&usg=AOvVaw2VD2DSlCMJS_ZXJgI36HLL
>>1278783In certain environments and situations that happens but it's not a considerable problem
>>1278708Not this way. Tidal flow operation can be easily done with at least triple carriageway, ie the odd central one reversible. (like a local-express system) This asymmetric configuration is commonly found in road expansions. Say you have a tunneled or elevated four-lane two-way in two two-lane carriageways (tubes or viaducts). You can add two more two-lane carriageway for eight-lane two-way, or one three-lane tube for seven-lane two-way with four-lane in the peak direction. Since the a.m rush hour is usually more predominant and concentrated, it could be wise to permantly make the inbound direction have more lanes.
>>1278839* Reversible central carriageway can be combined with HOV/HOT management.
I never said anything about limited access highways
These should be mandatory everywhere highways are partitioned with barriers
"Urban design" has no place on /n/. /n/ is about transportation. Not exercise or what fashion acessories look best when sucking off your boyfriend while riding bikes.Bikefags and communists need to get off of /n/.
>>1280313those are to prevent other drivers from being blinded by oncoming headlights?
>>1282023yes
>>1280861Automobile transportation is on /o/Non-automobile transportation is heavily tied to urban areas, arms are heavily affected by urban planning, and belongs on /n/
>>1282028Your agenda 21 shit doesn't belong here, moron. >Let's make a thread about destroying the suburbs, the nuclear family, and getting everyone to live in pogroms.>It's /n/ related because the private ownership of personal automobiles will be outlawed. :^)Get bent.
>>1282042I would assume my level headed post would make you drop the strawman but instead you doubled down on it
>>1280861...but bikes are a form of transportation?
>>1282135>StrawmanYou are even dumber than I thought.
More bridges should have parapets like this, they just look better than modern jersey barriers and their variants
>>1278215>160-mph head-on collisions>he can't into basic physics
>>1280861cry more
>>1280313>>1282023But those won't do shit for roof mounted lights on trucks.
>>1278248na they snap of easy
>>1284739>But those won't do shit for roof mounted lights on trucks.I've never seen roof-mounted lights on trucks here, if they're legal they're uncommon>>1284771Source?
>>1284794>I've never seen roof-mounted lights on trucks hereI've seen them. But they are not legal for use on the road. Get caught, cop will probably remove them with a nightstick.
>>1285348Oh, like those light bars for off roading? I see a lot of them around but they're not road legal so they're always off and never a problem
Heh. OP's joke is about Trump's border wall. I'm going back to sleep.
They found a way to make jersey barriers look even worse
>>128274680+80=160
>>1286293But force of impact will be identical to 80 into the wall. Not 160
>>1278708http://pathetic.org.uk/current/a38m/https://en.wikipedia.org/wiki/A38(M)_motorway
>>1287440>single-carriageway >motorway This is beyond pathetic, beyond retardation. Just redesignate it as a fucking expressway.
>>1287511It does work quite well despite being a single carriageway. I suggest you look at the pictures, and also the rest of the website because in the UK there genuinely are 1 lane per direction single carriageway motorways.
>>1287672No I don't have any problem with its function or operation. If it works, it's clever enough. But either barriers be installed, or they should be downgraded from motorway to expressway or something else. https://www.sabre-roads.org.uk/wiki/index.php?title=List_of_Single_Carriageway_Motorways>The A6144(M) was a single carriageway motorway before it was downgraded to A6144.It's not so hard.
>>1287689>3 lane per direction or 4 in one and 2 in the other at peak times>Motorway speed limits>Motorway junctionsWhy would you downgrade it? It already doesn't have full motorway status, and you example was literally a shitty countryside road.
>>1287694Why would you not? Why should it be kept as a motorway then? If you want motorway rules, they are formally designated as Special Roads in the first place, and it can be one without being a Motorway. Would you ignore those examples of non-motorway special roads now? >Aston Expressway>Expressway The example is showing it's been done before. It can happen on any of them.
>>1278210To prevent U-turns. American highways are shitty and if you miss a turn you'd have to drive miles to find a long way around.
>>1287722>American highways are shittyBest in the world actually
stopping illegals
>>1287722You must drive on the same route as my commute. I can only imagine that someone so dumb to think making u-turns on a freeway is acceptable must also ride and stop in the bikelanes on my way to work.
I wish there were more barriers in congested stretches of highway to prevent kamikaze left turns and retarded pedestrians
>>1287702I don't think that the rest should be kept as motorways, they're only kept as motorways because of British Legislative Autism™.
>>1278210parkour for carscarkour
>>1278248Except for bikers who'll slide underneath and fall to their death.
>>1282730Minnehaha creek?
>>1288055Are you retarded
>>1288055(You)
>>1278210To land your plane on.
>>1288091thx, that's my preferred pronoun.
