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Old December 28th, 2011, 02:50 PM   #181
Glodenox
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The accidents with metal crash barriers shown above can only happen when a crashbarrier starts without protection. Usually, crashbarriers start from just under the ground (example). Any car that drives on that won't be punctured, but at the worst flipped on its roof. For a long time on the E19/A1, there was a fork in the road where people had to choose left or right. I remember there being a driver who couldn't make up his mind and simply drove straight onto the barriers. The only result was his car being lifted on top of the barriers and coming to a halt on top of them, with hardly any damage Another solution is to put an impact absorber at the starting point of a barrier. That should prevent such accidents from happening.

I can't say I've ever seen any pictures of any such accident in Belgium either. Looking around though, I don't deem it impossible to happen at certain locations. Generally, the crashbarriers are properly placed to prevent that from happening, though during roadworks, sometimes crashbarriers are exposed.
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Old December 28th, 2011, 02:54 PM   #182
Chilio
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In fact, the last picture is a case of a continuous middle divider crash-barrier, not one starting without protection, which probably was torn because of this accident or previous hit. Such thing happen rarely, fortunately, but still they happen in different circumstances, not only at the end of a crash-barrier.
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Old December 28th, 2011, 03:23 PM   #183
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Quote:
Originally Posted by Chilio View Post
In fact, the last picture is a case of a continuous middle divider crash-barrier, not one starting without protection, which probably was torn because of this accident or previous hit. Such thing happen rarely, fortunately, but still they happen in different circumstances, not only at the end of a crash-barrier.
Hmm, strange. I can't understand how that crashbarrier got where it is... There should be more scratches on the side of the car. Oh well, it's not a perfect solution, I don't think any solution is perfect for barriers. Concrete barriers have the effect that they deflect the car immediately back on the road, possibly into other lanes...
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Last edited by Glodenox; December 28th, 2011 at 03:24 PM. Reason: typo
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Old December 28th, 2011, 04:02 PM   #184
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Quote:
Originally Posted by Glodenox View Post
The accidents with metal crash barriers shown above can only happen when a crashbarrier starts without protection. Usually, crashbarriers start from just under the ground (example). Any car that drives on that won't be punctured, but at the worst flipped on its roof. For a long time on the E19/A1, there was a fork in the road where people had to choose left or right. I remember there being a driver who couldn't make up his mind and simply drove straight onto the barriers. The only result was his car being lifted on top of the barriers and coming to a halt on top of them, with hardly any damage Another solution is to put an impact absorber at the starting point of a barrier. That should prevent such accidents from happening.
Exactly - I was going to write the same. Safety starting is alike important as exactly crash barrier, but - unfortunately - their designers and road workers often forgot about it.

Quote:
Originally Posted by Chilio View Post
In fact, the last picture is a case of a continuous middle divider crash-barrier, not one starting without protection, which probably was torn because of this accident or previous hit. Such thing happen rarely, fortunately, but still they happen in different circumstances, not only at the end of a crash-barrier.
Look at this barrier - it's corroded, so its resistance was weakened. Problem doesn't exist, if barrier is in good condition.
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Old December 28th, 2011, 08:18 PM   #185
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Quote:
Originally Posted by MajKeR_ View Post
Look at this barrier - it's corroded, so its resistance was weakened. Problem doesn't exist, if barrier is in good condition.
It's not that... Such corrosion can affect maybe some 0,1% of the barriers resistance. The reason that happened is that crash-barriers are not made of only one piece of metal (and could not be, as sometimes they continue uninterrupted for hundreds of kilometers) but of several pieces (for example 3 or 4 meters long) which are connected together by bolts. So when something harder (like a truck) hits the crash-barrier these bolts occasionally break and the pieces of crash-barrier disconnect, leaving their ends free in the air, and possibly if there's another crash immediately after it, this bizarre kind of crashes with punctured by the barrier car can occur. Moreover, there can be some miscalculation of the strength of the bolts, connecting the barriers, or even missing bolts, in case of bad maintenance.
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Old January 7th, 2012, 12:18 PM   #186
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Found on Google Street View

Violet crashbarriers found on a bridge near Exit 89 on the Autovía de los Viñedos (CM-42) in Spain:

http://maps.google.com/maps?hl=en&ll...291.68,,0,4.74
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Old January 7th, 2012, 02:00 PM   #187
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Quote:
Originally Posted by ForteTwo View Post
Violet crashbarriers found on a bridge near Exit 89 on the Autovía de los Viñedos (CM-42) in Spain:

http://maps.google.com/maps?hl=en&ll...291.68,,0,4.74
State-owned roads have usually blue crashbarriers on bridges. Autonomous regions have a sort of corporate image that use on their roads. Castile-La Mancha uses violet. There are more examples:
-Orange and yellow in Castile & Leon.
-Burgundy in Aragon.
-Red in Madrid.
-Grey in Gipuzkoa (Basque Country).
-Green in Extremadura.
-Dark green in Andalusia.
-White in the Balearic Islands.
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Old January 8th, 2012, 02:13 AM   #188
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It is well known that one out of three hundred human actions is wrong, on average. If we are aware of that we will have to design the new stretches of the motorway like the Formula 1 track layout or the MotoGP track in order to eliminate the worst consequences of failure. It is dificult to imagine that at the moment but in the future it would be the main criteria. Today, three countres in EU are leaders for the safety issues on the motorway network in the World. Sweden project "Vision zero", Dutch project "Sustainable safety" and UK project "Safe road design" are on that clue.Safety statistics for motorway network can confirme that (killed/billionvkm). Other countries in the world only need to follow their vision and ideas with adopting that to theirs conditions. They do not need to discover hot water again. Today, We are all paying with our lives for poor Road Restraint Systems which are installed several decades before, when we did not know a lot of things that we know now. How that looks from bus drivers point of view, you can see in the links below.
All the tragic consequences were occurred due to the lack of the safety barriers or theirs poor restraint capacity:

http://www.bbc.co.uk/news/uk-scotland-14026120
http://en.trend.az/regions/world/europe/1910847.html
http://www.birminghammail.net/news/b...7319-27353523/
http://www.panorama.am/en/society/2010/02/17/france/
http://dalje.com/en-world/polish-bus...-1-dead/135919
http://www.flickr.com/photos/[email protected]/6188452572/
http://www.france24.com/en/20100216-...-crashes-italy
http://www.allvoices.com/contributed...ash-in-germany
http://www.thelocal.de/national/20100314-25871.html
http://christopher-leach-photography...s-crashes.html
http://news.in.msn.com/pakistan/arti...mentid=5468976
http://www.msnbc.msn.com/id/12357757...-road-killing/
http://www.allvoices.com/contributed...n-bus-accident
http://www.freerepublic.com/focus/f-news/1869831/posts
http://www.youtube.com/watch?v=SHQck...ayer_embedded#!
http://www.belfasttelegraph.co.uk/ne...-15143408.html
http://forum.nationstates.net/viewto...p?f=23&t=82470
http://www.dailymail.co.uk/news/arti...ft-ravine.html
http://www.accidentsplanet.com/2009/...ts-photos.html
http://www.allvoices.com/contributed...ridge-in-china
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Old April 14th, 2012, 10:46 PM   #189
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After a fatal incident few months ago when a bus crashed into concrete columns of an overpass and several people died authorities started installing some new (for our country) type of second crash-barriers at such places... shiny enough too:
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Old April 14th, 2012, 11:24 PM   #190
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Yea, the crashbarriers at the both sides are type H2W7 an the one in the middle, around the columns, are type H2W4. More photos here - http://www.jupitermetal.com/05BG/?op...d=48&Itemid=54
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Old April 15th, 2012, 12:30 PM   #191
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Quote:
Originally Posted by Chilio View Post
After a fatal incident few months ago when a bus crashed into concrete columns of an overpass and several people died authorities started installing some new (for our country) type of second crash-barriers at such places... shiny enough too:
Unfortunately, that is not enough. As Mediar said it has only H2 restraint capacity, that means for vehicles up to 13000kg. What about heavy truck above 13t? AFM, MW-median needs H4 barriers!
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Old April 15th, 2012, 12:33 PM   #192
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Quote:
Originally Posted by mediar View Post
Yea, the crashbarriers at the both sides are type H2W7 an the one in the middle, around the columns, are type H2W4. More photos here - http://www.jupitermetal.com/05BG/?op...d=48&Itemid=54
It could be seen that H2W7 is located in median only. On the other sides are barriers with T or N class capacity.
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Old April 15th, 2012, 08:49 PM   #193
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No, no, I'm talking only about the crashbarrier in the median. The new shiny part of it, that can be seen on the photos, was installed last summer and is 304m long. These 304m are divided in three sections - 2x100m H2W7 at the both sides and 104m H2W4 in the middle, right around the columns. I know H2 sounds weak to you, but knowing that up to day all the crashbarriers, installed in Bulgaria, on our motorways, first, second, third and fourth class roads, are type N2W7 and worse, it's still some kind of improvement, isn't it?
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Old December 3rd, 2012, 11:56 AM   #194
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Hello.
Could you tell me if the permanet concrete crashbarrier H2W4
has been constructed and where i can find it?

Thank you.
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