First there is no need for either to stoop the level of personal insults, both have there own belief, no matter how flawed we may think they are.
Wire fence on country roads have alway been a problem but in the main they don't tend to have concreted in Iron post holding them in place, and they also don't tend to be at the same tension as the WRBs, they also don't have the twisted strands that change the wire into a primitive form of saw.
As for cost the WRB,s are a cheap skate alternative to safety, as they only have a short life span when compared to concrete barriers, they fail in this country because they do not even comply with the original design that calls for 3.5 meters between the road lane and the barrier themselves, when in the close distances they are used on in particular the Souther Motorway, they end up slingshotting anything not soft, that hits it back into the following traffic, and not the outer lane , but some where between the two lanes. and if in the case of the crash in Wellington on the 4th March end up closing the motorway, as it was not economic to take down the WRBs to allow the traffic to pass.( Dom Post state it would take 8 men to remove a section of WRBs were a Concrete Barrier could have been removed by one man with a lorry and Hiab.) How much did it cost the economy with lost production of the people caught up in the snarl up the crash caused, LTNZ don't have to cover those cost so they don't give a Sh!t.
As for the fact that you say they are only on straight section ( thats bad enough in its self) but they are on the corners, and going wide is not the main reason for losing it, Nor is doing a wheele at 30KPH, you have to consider the main reason Car pulls out in front of you because they don't check their mirror, you then have to swerve or get side swiped, or front wheel blow out, ( which is more common than most think, mainly due to a precious crash and the road not being cleared correctly, or lorries shedding some of it load) there are loads more reasons for failing to hold your line on a corner.
If you want to check up on cost then go view the video at the following link
http://www.safermotorways.co.uk/feature31_video_003.htm
Long term Concrete is cheaper and safer, and less costly to the economy of this country


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