More 'noise'.
I noticed recently that Lewisham have installed one speed sensitive sign for the traffic entering PV from the South Circular.
Speeding is not the issue here imo and a driver would have to be quite determined to get over 30 mph uphill in such a short distance.
I've only seen it fire once, and as I recall it only shows a crossing sign.
So for all other drivers, there are not many clues that this is, in theory, a crossing zone - which is the issue.
I think a pelican crossing would be heavily used here, and if this is a pelican zero sum game, then they can borrow the pelican from half way up London Rd. I rarely see this used and instead they can add some much needed pedestrian crossings facilities to the lights around the junction with Honor Oak Rd - across Honor Oak Rd in particular.
Hey, if it is justified having a diagonal crossing for the T-junction outside Smiths, lets have one on the PV side too! Very fashionable.