Transcription: a photo of a shared pathway entrance with a series of steel pipes placed to create very narrow pathways to enter. The width is hard to tell from the angle of the photo, but far too narrow for a wheelchair or bicycle to fit.
Once you've had a bit of experience pushing prams something like this isn't an issue. They are pretty common around the place. They are needed because there are idiot motor bike riders that drive at speed on the walking/cycling tracks.
That's the sort of thing, but those ones have a huge gap, bigger than I've ever seen. The ones at the end of alleyways I've seen, the gap is much smaller. I don't think you'd get a mobility scooter through, and a wheelchair would be a tight fit.