Some good news from the UK: London cycling numbers go wild | London Cycling Campaign (lcc.org.uk)
Cycling numbers are up in London!...

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Cycling numbers are up in London!...
Car-brains now actually blowing things up in suburban England, with the tacit support of Tory MPs.
By contrast, little average change in motor traffic on LTN boundary roads...
The researchers said the introduction of the Lez helped to reduce particulate matter (PM10) in Greater London by 13% between 2008 and 2013, compared to between 2003 and 2007....
I’ve always argued this wasn’t the case and that motoring is a worse transport mode because of the associated externalities, not because of anything inherent to the users....
A handy summary of studies into LTNs and equivalent schemes....
Some interesting stuff here, including links to more studies showing similar results in different countries....