Author Topic: Cable Barrier Improves Highway Safety  (Read 3199 times)

Offline Trainman

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Cable Barrier Improves Highway Safety
« on: March 29, 2007, 02:54:31 pm »
Anyone with any experience with these?


From the BC Ministry of Transportation web site:

http://www.news.gov.bc.ca/default.asp?organisation_obj_id=0b00921e80000575&levelFlag=1&crumb=B.C.+Home**Transportation&crumburl=%2Fhome.do*%2Fchannel.do%3Faction%3DgovOrg%26channelID%3D*%2Fchannel.do%3Faction%3Dministry%26channelID%3D-8394

   NEWS RELEASE   

For Immediate Release

2007TRAN0011-000318

March 27, 2007

CABLE BARRIER IMPROVES HIGHWAY SAFETY

CHILLIWACK – Motorists will be protected with the installation of a new wire rope cable barrier along the median of Highway 1 between Young Road and Prest Road, announced Transportation Minister Kevin Falcon today.

“This is the first time we’ve used this type of barrier on a major highway in the province,” said Falcon. “This is leading edge technology that has been proven to reduce the number of cross-over crashes.”

The three-kilometre-long location was selected because it has a history of cross-over crashes, and a traditional concrete barrier would have required site modifications, such as drainage improvements and widening the pavement area.

The wire rope cable barrier system consists of tensioned wire ropes supported by collapsible posts with anchors. The kinetic energy of the impacting vehicle is absorbed by the wire ropes and posts, reducing injury to the vehicle occupants and reducing damage to the vehicle. The open design minimizes the visual obstruction that other barriers can present, and reduces the accumulation of drifting snow.

“The new barrier on Highway 1 will boost safety for motorists travelling through the Fraser Valley, so I fully support this initiative,” said Chilliwack-Kent MLA Barry Penner. “This technology has recently been tested in the Harrison Hot Springs area, and it works. In January of this year, the wire rope cable barrier stopped a vehicle from plunging into the lake.”

“This innovative technology has been used in the U.S., the U.K., Australia, and New Zealand,” said Minister of Public Safety and Solicitor General John Les. “Studies from these jurisdictions have concluded that the number of fatal crashes is significantly reduced on roadways with wire rope cable barriers. That’s why British Columbia is opening the door to this technology.”

The project will cost $364,000, with the Ministry of Transportation funding $334,000, and ICBC funding $30,000. Work is expected to start in early April, and finish later that month.

-30-



An artist’s rendering of the wire rope cable barrier:



 
« Last Edit: March 29, 2007, 02:56:39 pm by Trainman »
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Offline safristi

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Re: Cable Barrier Improves Highway Safety
« Reply #1 on: March 29, 2007, 03:04:09 pm »
Looks like a "new" again !!! Version of what existed in the 60's/70's in Car races and Hi_ways back then...wot's OLDE is NUEW agin......!!!!..PULL MY WIRE....the GIVE in the STRONG cables is less "traumatic!!! a lovely word today"..ie  MORE FORGIVING as it "bends" as opposed to a Metal or Concrete barrier that PUTS the ENERGY RIGHT back AT YA...(ouch)...like a reverse slingshot..the energy is adsorbed as the cables stretch and at the same time keep you from flipping/crossing the median and bouncing back into the lane U left cos ya were "TOAST/ON THE PHONE?Watching THE NAV!!/Picking yer NOSE whatever.....drive ON doofus"... :'(
THERE IS NO CURE FOR "LOTUS"......ONLY TREATMENT.....

Offline quadzilla

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Re: Cable Barrier Improves Highway Safety
« Reply #2 on: March 29, 2007, 03:06:36 pm »
I hope they build it in the middle between the two directions.  If you had to do an emergency maneuver that barrier is in the way right now.

Don't know if that idea is better than the walls we have here though?
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Offline safristi

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Re: Cable Barrier Improves Highway Safety
« Reply #3 on: March 29, 2007, 03:15:29 pm »
The energy is supposedly "better disperssed" due to the Give/elasticity of the cables....BUT I will defer to to a Mechanical Engineer(if she's Cute and bends backwards!!! :o 8)) ;D

Offline The Mighty Duck

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Re: Cable Barrier Improves Highway Safety
« Reply #4 on: March 29, 2007, 04:08:07 pm »
I'm sure in the end a concrete barrier probably provides the most crash protection, but these wire setups will surely be better than empty space.  I wonder about the "collapsible" posts, though?  Sounds to me like if you're going fast enough you'll just plow right over the barrier?  Then again, I suppose the combination of speed and angle required to pass through it will be small, and the number of cross-over accident reduced.

:thumbup:


Offline safristi

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Re: Cable Barrier Improves Highway Safety
« Reply #5 on: March 29, 2007, 04:11:03 pm »
PULL_MY WIRE DEMO!!! ;D ::) ??? :P

Offline airbalancer

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Re: Cable Barrier Improves Highway Safety
« Reply #6 on: March 29, 2007, 07:57:51 pm »
sound like what they had on parts of the 401, it has been replace by concrete

Offline Snowman

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Re: Cable Barrier Improves Highway Safety
« Reply #7 on: March 29, 2007, 08:14:57 pm »
If you look at racing ovals you will see cables supported by posts. The wire mesh just keeps the smaller bits from the crowd.

Offline Sir Osis of Liver

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Re: Cable Barrier Improves Highway Safety
« Reply #8 on: March 29, 2007, 09:03:06 pm »
A motorcyclist would be gutted like a trout hitting that. Bravo. :banghead:
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Offline dr_spock

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Re: Cable Barrier Improves Highway Safety
« Reply #9 on: March 29, 2007, 10:02:47 pm »
More like one of those egg slicers...


Offline HeliDriver

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Re: Cable Barrier Improves Highway Safety
« Reply #10 on: March 29, 2007, 10:07:02 pm »
A motorcyclist would be gutted like a trout hitting that. Bravo. :banghead:

And how much better would a motorcyclist fare hitting a concrete divider.  ???

Offline Sir Osis of Liver

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Re: Cable Barrier Improves Highway Safety
« Reply #11 on: March 29, 2007, 10:58:52 pm »
Better. Smooth solid barriers without ridges won't slice or rip off limbs. It's one of the reasons armco and cable barriers had been replaced with concrete "jersey turnpike" over the years.

Offline Gwendly

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Re: Cable Barrier Improves Highway Safety
« Reply #12 on: March 30, 2007, 09:49:04 am »
These barrier are used in several places in Sweden as well. One of the advantages that they don't mention in this article is that (supposedly) you can bounce back onto the road when you hit it, say if you fall asleep while driving. I know these barriers have been installed on a highway close to where my folks live and fatal accident have gone down in that area.

Bring on the cables! :)
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Offline safristi

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Re: Cable Barrier Improves Highway Safety
« Reply #13 on: March 30, 2007, 12:28:49 pm »
I call BS on the cyclists "SLICED LIKE EGGS".................ya just made it UP..... ::) :-\


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Offline Sir Osis of Liver

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Re: Cable Barrier Improves Highway Safety
« Reply #14 on: March 30, 2007, 09:42:59 pm »
Issued 8th August 2006

On Friday 4th August the Norwegian Minister of Transport, Mrs. Liv Signe Navarsete, announced a ban on the use of cable barriers. She did so after years of lobbying by FEMA´s member organisation, the Norwegian Motorcycle Union (NMCU). “Finally, we see an end to the egg slicers”, said NMCU chairman Jan-Fredrik Moller.

Since the early nineties, the NMCU has spearheaded the struggle against cable barriers, or wire rope fences, a design not at all developed with motorcyclists’ safety in mind. In a press conference outside the Department for Transportation in Oslo, Norway, the Minister of Transport, Mrs. Liv Signe Navarsete, made the following announcement:

 “I have, in agreement with the Norwegian Public Roads Administration, reviewed the objections from the NMCU, and examined the case more closely. Today I have this message to the NMCU and the Norwegian motorcyclists: The Public Roads Administration shall hereafter use crash barrier types that offer a high level of safety for all groups of road users. This implies that there will be no more road stretches fitted with cable barriers, beyond those already installed”.


The Norwegian Public Roads Administration has argued that cable barriers cost a lot less than other barrier designs. While it is true that cable barriers are cheaper to purchase, maintenance costs have proven to be astronomical, and thus the total cost ends up comparable to other designs. “We are very pleased that the Minister of Transport has heard our objections, and we’re grateful for the wise decision she has made. This is a victory for road safety, for the NMCU, and for all motorcyclists in Norway”, said Jan-Fredrik Moller, facing massive applause from the motorcyclists present.


There’s a growing scepticism towards the use of cable barriers throughout Europe. Denmark has removed all theirs, the Dutch Parliament decided last year to ban cable barriers and even prominent members of the European Parliament (MEPs) have now suggested a ban in the European Union. In this respect, Mrs. Navarsete’s wise decision is in accordance with the developments in the rest of Europe.

NMCU´s success supports FEMA´s fight on European level. During a meeting in the European parliament on Wednesday 19 April 2006, FEMA informed MEPs about the dangers connected with the use of crash barriers. With standard crash barriers motorcyclists will often slide under the barrier, instead of being guided. A collision with one of the supporting poles often leads to fatal injuries. The safety of motorcyclists can be improved by adapting crash barriers with elements that prevent riders from hitting the poles. But with cable barriers not only the posts, but also the cables pose a threat as they can have a cutting effect that might lead to amputations. This type of crash barrier has earned the nickname, the ´egg slicer´, for a reason. The stories of motorcyclists who have survived encounters with the cable barriers are horrifying.

FEMA therefore calls on the European Commission to include motorcycles in the testing of crash barriers within the current EN 1317 standard, so that crash barriers can be made safe for all road users. Or to develop a new standard, parallel to EN 1317, focussing on motorcyclists' specific safety needs since that is absolutely not the case at this moment.

Offline safristi

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Re: Cable Barrier Improves Highway Safety
« Reply #15 on: March 31, 2007, 11:19:13 am »
"MIGHT have a cutting effect...and MAY lead to amputations...."STORIES" about...etc...Growing scepticism!!!" All sounds  like HEARSAY..yer HONOUR ..where are the STATS????

 AS we all know being on a Motorycycle can lead to ALL the above at any speed  in any town when some clown doesn't "see"ya and cuts you off or barrels into you..

  The EUROPEAN UNION is always looking for something to REGULATE.....the size of BEANS,the definition of a Pidgeon.... or some such nonsense READ some of their  REGULATIONS..better than MAD TV......

 It would appear we dont' have any(many?) cable barriers in Canada anyway..May none of US bikers HIT ANY BARRIER.
« Last Edit: March 31, 2007, 11:21:08 am by safristi »

Offline The Mighty Duck

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Re: Cable Barrier Improves Highway Safety
« Reply #16 on: March 31, 2007, 02:16:32 pm »
Hmm.  Canada's timing seems a little poor, I think.  :(  Interesting that the maintenance costs are so high...  I wonder if a cable "net" would be a safer, still relatively inexpensive, alternative.

Offline Sir Osis of Liver

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Re: Cable Barrier Improves Highway Safety
« Reply #17 on: March 31, 2007, 10:58:01 pm »
Not sure about the rest of Canada, but they were used throughout rural NB. Very few of them left. Pretty much all replaced with armco, which isn't really any better.

The barriers consisted of 6X6" posts about 32" high with several runs of 3/4" aircraft cable strung through them. Very nasty bit of work for riders.

Offline safristi

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Re: Cable Barrier Improves Highway Safety
« Reply #18 on: April 01, 2007, 09:12:45 am »
ONLY if you run into them and then only MAYBE...where are the NUMBERS and stats..i FEAR U are letting the "visuals" make yer mind up....as we all do...............look at the rack on that motorbike... :P

Offline random006

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Re: Cable Barrier Improves Highway Safety
« Reply #19 on: April 01, 2007, 10:28:50 am »
From debate of two undesirable options can come a solution.

Perhaps a thick and somewhat pliable mesh would be the answer.  This mesh would be far more advanced that a standard link fence or single layer mesh.  The mesh would have to be a close weave and made of several layers.  It would also have to be impervious to the weather.  It should also include reflective gear/paint/tape to be visible at night, possibly even in a snow storm.

The resulting surface of the mesh would have to feel smooth to allow for sliding but the "give" in the material would be able to absorb a sufficient amount of the impact to slow down any object that comes into contact with it, from a glancing blow to a direct hit.

In so doing, a motorbike rider would hit and then glide or roll along the surface, all the while slowing down.  A car might plunge through it but not before slowing down to a crawl, preventing intrusion into oncoming lanes or other hazards.

The only problem to overcome would be how to construct, anchor and position the support poles.