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Harringay, Haringey - So Good they Spelt it Twice!

I'm not sure whether this has been shared elsewhere on HOL - can't see it in a search but...

We have recently received a note through our front door that the St Ann's Low Traffic Neighbourhood will be implemented on 22 August.

This is a heads-up for anyone living in or driving through the area between West Green Road and St Ann's Road.  There will no longer be a direct route between the two major roads unless you are a bus or have a 'X2' exemption pass. 

Woodlands Park Road, Black Boy Lane, Cornwall Road and Avenue Road will all be closed to through traffic. 

The restriction points will be monitored by CCTV, so no doubt LBH will be issuing lots of PCNs!  Drivers beware!

I attach two documents, one a map of the area showing the traffic cells as they will be after implementation, and the other the supporting document.

Tags for Forum Posts: low traffic neighbourhoods, st anns ltn, traffic

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Just to be clear, this is the traffic on the main road (i.e. Green Lanes and West Green Road).

There are multiple posts talking about the increase in traffic on these roads.

How did you generate the graphs? I want to see the pre implementation data for Cornwall Rd. But it’s just a spreadsheet of data as far as I can see. 

I just did it quickly in Excel using the data. Although the Cornwall Rd one looks like it has graphs already in the file.

Okay thanks. So 7 day average of 4000 vehicle journeys. This is one way street and the TA for St Ann’s Hospital records the road as have 60% no car ownership. Do you happen to know how this is classed? Is it a minor road I assume. I believe the road is above average in terms of social housing. As there is no road data for now anecdotally I would assume it’s way down on the 5000/ day av. This would suggest an improvement which is really positive. 

Can you confirm which of those WGR monitor points this is? Is it showing no change in general? Surely if you listen to all the protests this should go up? 

This is West Green Road by Belmont Rd.

My guess, and it is only a guess, would be that the extra bit of traffic in the rush hour (it only really seems to be the morning rush hour where there is much difference) is offset by traffic taking other routes/not happening.

I expect the plan would be to do a bigger analysis based on the traffic counts but I'm not sure when the next set of those is.

Edit: Looking at the figures averaged by week it does appear that there was an increase when the LTN was introduced. However, I'm not sure whether this is due to the LTN or the school holidays that ended around the same time, looking back earlier I suspect it was the holidays. I'm not sure what was happening in the middle of July but they look like outliers and there may have been a small increase when the LTN was introduced.

Can you generate the West Green/ Philip Lane one? 

This is West Green Road at the mini roundabout with Philp Lane. I've done daily averages per week just to make it a bit clearer.

These charts are great but got me thinking has anyone got a young person who needs a topic for their MSc dissertation next summer? Ideally to really understand the impact of the LTNs you would want to go beyond a before and after comparison and do a difference in difference analysis with a control of another part of the borough with the same sought of traffic trends for a year or 2 pre LTN and then track forward to see if the forward trends diverge after the LTN introduction (difference in difference). Someone doing stats or economics could do a great piece to test this empirically with these data or perhaps that is what Haringey has commissioned to evaluate?

The monitoring proposals look quite detailed and there is a proposal to benchmark against Crouch End.

https://www.haringey.gov.uk/parking-roads-and-travel/roads-and-stre...

Obviously lots of ways to slice and dice the stats though and there is going to be a lot of data by the end of this. They are also releasing things like air quality data, the breakdown of the modes of transport, number of pedestrians, etc

Thanks very much. It’s a subtle downward trend. That monitor should be capturing traffic at average speeds at the middle of WGR and the Philip Lane movement. It was always a busy section with drivers se ting multiple routes south through the residential minor roads to get to St Ann’s. 

I am wondering whether the through traffic stats for West Green Road and Green Lanes are controlled more by the traffic signal timings than the amount of traffic wanting to go through.

Certainly I have thought that an additional 5-10 secs on the green phase for Alfoxton Avenue onto Green Lanes would ease the queue down West Green Road in the morning.  Not sure whether anything further could be done for the northbound flow in the evening around St Ann's Road though.

I also don't know what effect the Bruce Grove LTN will have - goes live today.

Ah - just looked at Google Maps and it shows Belmont Road/Downhills Way backed up almost to Lordship Lane.  Eastbound on the A10 towards Bruce Grove also looks dire.

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