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What did you say was problematic with the Brooke Road junction design again (Downs LTN)? I forgot your opinion.
fussballclub-
It's not that easy to summarise. That one's not as bad as the above example, but with Hackney Downs it's more a problem of methodology first. They haven't defined the cells to start with, and there is a question of how large the cells should be. You don't want to make them too large, because then you'll get people driving faster inside the cell to get somewhere inside it. For the size of the cell that's supposedly been filtered under the current scheme, there are far too few filters, and it also leaves plenty of rat-running routes open (ones that engineers probably disregarded because measured through motor traffic levels there were low at the time of investigation). At the moment, because of COVID-19, you don't see the effect of that so strongly just yet, but were 'normal' motor traffic levels to resume, it would soon become noticeable. There is the question whether that location is the right one. I don't think it is (debatable; it goes back to the above question of how big a cell should be), but if it were, it shouldn't be a diagonal filter, but a (camera-enforced) 'Culford filter'. There's still plenty of rat-running along Brooke Road and Evering Road to avoid Upper Clapton Road, as well as along Evering Road and Brooke Road. Again, all a bit muted at the moment, but we'll see how it develops with the prospective Reopenings of Everything.
Oliver Schick
No, it's worse than nothing, because if the 'LTN' gets removed again because of this rubbish design, it won't be replaced before long, and if it remains, it won't get replaced by a better design.
It's a highly problematic scheme that hasn't solved the left-turn issue. Plenty of drivers will get it wrong and it will have created new problems inside the cell, like the ones that Ed mentions.
I assume the double irony here is deliberate. :)