I agree the width of the road has some impact for sure, especially when quiet. Driving along some roads, Sydenham Road can be borderline painful.
As a cyclist I see a lot of frustrated drivers, the ones who make me laugh the most are the ones following me impatiently at 20-24mph in a 20! For them to have passed, as the speed they do, they must be way over.
You will always have the people who are more important and need to get there quicker than you, but unless you have blue lights and a suitable job title, you can drive like the rest of us.
Of course this is nothing new, we still have roads full of light jumpers, puller outers (people who calmly pull across your path, speeders, idiot parkers, and basically a poor standard of driver. That said, there are some fantastic and very patient drivers too, I thank many each day on my ride to and from work.
I see the monitoring equipment has been installed on certain roads where there is concern, like Perry Vale. Sadly it is almost at the roundabout so will show a much slower average speed than it would further up. Maybe this is to be used a stats for success and showing how the average speed has dropped, all thanks to the efforts of the signs!
And while all that is going on, there is STILL a flashing matrix sign outside Brockley Cemetery which still incorrectly activates and flashes 30MPH ! Errm, wrong!
In short, I am still underwhelmed by the scheme, but expect to see lots of traffic calming installed soon.