Cycle Superhighway Extension - East.

Nearly all of Greater London then, where average speeds are 11mph, I think. Drivers think cyclists delay them, but I invariably catch up with the car at the next junction or lights.

True. That's an education issue - they are obviously slowed in the sense they'd rather be doing 30 - but the journey isn't slowed at all.

But a lot of these segregated lanes are out more suburban/rural where I don't think it's justifiable to hog road space if almost as good space is there. Clearly it depends on each scenario - there's a bit in west wickham where the pavement is shared peds/cyclists and you just end up negotiating a slalom of lamposts, buggies, turds, and so forth.