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Well I would contend that forcing all the traffic from two arteries into a single artery is a sure-fire heart attack
How many times have we said that a fair amount of the traffic just disappears? And the longer this is in place the more will disappear. By your logic we should be building MOAR roads.
Exactly.
Given that one of the two major roads through Harringay was blocked to vehicles, isn't it amazing that ONLY 8% " evaporated " ?
Most councils would give their eyeteeth for an 8% traffic evaporation especially for such a minimal investment (it was achieved with about a dozen concrete roadblocks).
The 8% is in the area as a whole. Let's also focus on the 90%+ reduction in traffic on Wightman itself.
Which resulted in a 70% increase in traffic on Green Lanes ?
And you're surely not suggesting that a permanent filtering would be done with ugly concrete blocks which most vans could move aside ?
The increase on Green Lanes was nowhere near 70% John. In fact actually it decreased by 2% by the Arena, and only increased by 8% in the middle - which by your previous argument you'd have to agree is a negligible amount? Certainly shouldn't be too hard for the mitigating measures to alleviate any additional congestion caused by the added volume.
Well, that was a wild guess Joe, like most figures quoted on here. But where did the traffic normally on Wightman go then ? |Naturally, if it takes three times as long to get from one end of Green Lanes to the other, the number of vehicles passing through in any given period will be three times fewer.
And why did people complain about the traffic at a standstill and the exhaust fumes on Green Lanes ?
Why did it take three times as long as usual to get from Hornsey to Turnpike Lane Station ? ( at the end of the closure as well as at the beginning )
What mitigating measures will reduce the number of vehicles trying to get through the area?
And how about the ugly concrete blocks?
You can carry on making wild guesses if you like John, I prefer to use the traffic survey data which the council has published:
http://www.haringey.gov.uk/sites/haringeygovuk/files/existing_condi...
The origin destination data on p131 answers your "where did all the traffic on WIghtman go then?" question. There was 8% evaporation across the whole area but some journeys obviously evaporated more than others.
As for "why did it take 3 times as long", (and again you can look at the actual data to see if it was actually a multiple of 3, most journeys only increased by a few minutes) the answer is that a small percentage increase in traffic volume can have a larger percentage increase in journey time. Volume is not the only factor affect journey time, you also have traffic light phasing, turning and parking manoeuvres, and other things (changes to which have all be proposed as mitigation measures).
As for the concrete blocks, to be honest if necessary I'd be happy with that initially given the limited budget and the need to spend at least some of it on mitigation measures. You might think the blocks were ugly but not as ugly as 1000+ vehicles per hour. And of course visual "pollution", unlike air pollution, doesn't impact people's health. Once funds become available the blocks can be replaced, ideally with gates (which could perhaps be lifted for refuse collection and other purposes).
I made reference somewhere else on here in relation to how a lot of the suggestions that it was disastrous were anecdotal (and I guess wild guesses as well) and not necessarily supported by the data.
That would be nice. But the question is whether you take what is currently offered in the hope that it may drive future change or wait another 10 or 20 years for a possible whole area solution.
Personally I'd rather wait for a possible whole area solution.
Actually this is exactly what I was hoping this study would suggest. I'm disappointed that we seem to have ended up with packages of suggestions made by local people none of whom, to my knowledge, are traffic or planing experts and each with our own bias, conflicting needs and opinions.
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