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As someone who I understand is a scientist, Tom seems to play pretty fast and loose with data. Firstly, as requested it would be vital to understand the basis of this data, and then understand how it was collected and what normalisations occurred. Was it adjusted to account for weather, holidays or other events. Was it sustained over a period of time? I am sure Tom knows the difference between correlation and causality. Lets also take a step back. As others have said, we are in unprecedented times, so is previous data applicable, especially given the reluctance to use public transport.Lets also stand back from the data. So lets assume we saw some short term uplift. So were people choosing to spend more money overall, or just reallocating money from other areas they could not reach? So some local retailers in Barnes may benefit, but others in Putney (where congestion was terrible) or Hammersmith may lose out. I would also suspect that any increase will reduce over time as shoppers find other outlets, use online etc. We cannot argue all retailers across London benefit, can we?Whilst Barnes is a contained local area and many can walk to the shops, I see no logic as to why the closure of Hammersmith bridge would boost sales in Hammersmith. Traffic did not improve in Hammersmith, actually around the gyratory and down Fulham Palace it got even worse, with no change on King St. Given the broad range of shops in Hammersmith its hard to argue shoppers were reverting to local options given they could not get to Barnes. So to then conclude that more traffic equals higher sales would appear to complete rebut the argument Tom is making.It may be true that retailers overexaggerate the number of shoppers arriving by vehicle, but that doesn't mean that a substantial proportion don't, and maybe they have a greater propensity to spend or want to do bigger shops. Its also not a good idea to ignore and deny the realities that local retailers are telling us, when the data is being used in such a tenuous manner.

Paul Green ● 2266d

Again, here are the figures from the report. I'm not sure why you are finding them so confusing:Average increase in spending in shops in SW13 after the closure: 21% Average increase in spending in shops in W6 after the closure: 13% Average increase in spending in shops in London after the closure: 9%Yes there was a 4% increase in spending in shops in W6 compared to the rest of London after the closure. It could be partially driven by the extra 1000 vehicles on the A4, or the extra 3000 on Fulham Palace Road, but that would be difficult to isolate as you're looking at much smaller changes in traffic. In contrast the 8% increase in spending in shops in SW13 came with a 25,000 drop in vehicles on the main road through Barnes. That's a much stronger effect by any measure.Air quality measurements are the product of the pollution from traffic passing next to the monitoring station and a more general contribution from pollution in the area as well as weather conditions. In Barnes and Chiswick about half of the pollution is a more general contribution. Hence these general effects will offset local increases in traffic on a particular street. There was an 8 to 10% increase in traffic across Putney Bridge after the closure, 4000 extra vehicles on top of the usual 40,000 to 50,000. Hence it appears that the local increase in pollution from increased traffic over Putney Bridge was more than offset by the overall reduction in the background pollution.Overall the BCA report shows a reduction in both overall traffic across the Thames and improved air quality at all monitoring stations - I'm ignoring nothing. In contrast you appear to be saying that we should discount the overall improvements in air quality if there are any losers, which in this case are not even apparent.

Tom Pike ● 2266d

Tom, how selective can you choose to be. The Barnes 'report' says that 'Castelnau is now an oasis of calm and a pleasure for both residents and people traveling by bus, bikes or on foot.' Of course it is.So what about Chiswick Bridge, Kew Bridge or Putney bridge, all already at capacity and all saw significant increase in traffic, congestion and pollution. Or the toads that feed into them. How about Chalkers Corner which saw an extra 8k vehicles a day? How can you sit there and ignore the impact of this. You claim pollution overall fell, and said the improvement in air quality is something 'we can all benefit from'. But you acknowledge that congestion has increased in many areas, and it may be the only reason the few monitoring stations did not record an increase in pollution is a fall in 'background pollution'. Residents who saw day long traffic outside their homes, where previously there had been none, will suffer more harmful pollution. Do not try and deny this. There is a massive disparity between the local residents that benefit from this closure, and the huge number of residents and local people who suffer increased congestion, noise, pollution and longer journey times. If you close another bridge, then the same pattern is repeated. A small number benefit and a larger number suffer from appalling conditions. You seem to think this is OK, same as your attitude to road closures in Chiswick. A few people benefit, but the impact of displaced traffic on others is simply ignored.

Paul Green ● 2266d

SO Tom, lets examine your last post to me:'Paul, yes, traffic at Chalker's corner went up the most by 8,000, which looks like the sum of the increase of 1,500 along the South Circular and 6,500 on Chiswick Bridge. But the increase at that junction is less than a third of the 25,000 decrease in traffic through the middle of Barnes to the Hammersmith Gyratory.It's not a zero-sum game, as the Thames crossing numbers show. Overall traffic fell. Overall pollution fell. There was an overall benefit in air quality.People in Barnes benefitted the most, but overall we all benefitted.'Lets start from the top: 1) Why is it relevant to the residents or people needing to use Chalkers Corner that the extra 8k vehicles using an already heavily congested junction was less than a third of the traffic lost to Hammersmith Bridge. Its not, all they see is more traffic, noise, congestion and pollution. Are they meant to console themselves about how nice Castelnau is now, and what its added to the value of the big house there?2) Overall traffic fell, overall pollution fell, an overall benefit in air quality. You seem to be moving from the disingenuous to outright lies. Averages are meaningless, look at the A level results. On average they were fine, better than last year and most were not downgraded. But this masked the devil in the detail, If you live in Putney, Sheen, parts of Chiswick and Fulham, you didnt experience less traffic, you experienced more traffic. Admit it, its 100% clear. Its also not just an inconvenience, it means more local pollution, especially particulate matter this is very localised and harmful to lungs. Noise from busy roads is also shown to impact mental health and weight.And we did not all see an improvement in air quality as a result of the closure. We saw some reduction in background pollution that seems to have cancelled the increase from traffic by a couple of monitoring stations. But areas like Fulham Palace Rd saw lots more traffic and more pollution. Traffic pollution tends to be very localised. Noone in Chiswick saw air quality improve as a result of the bridge closure.It is a zero sum game. Overall traffic may have fallen, but not be enough to offset the loss in bridge capacity. As clearly and undeniably seen in the increase in congestion, noise and local pollution in many areas. Great for those in Barnes, bad for everyone else. Stop being so ridiculously obtuse.

Paul Green ● 2265d