With all the double yellow line areas and pavements occupied all day by commuters and residents, where do you park if you are just popping out to the shops? Zebra crossings.
These areas are rarely occupied by all-day parkers, presumably because they feel it is too risky. But for short term parking, they are ideal. Why? Because they often put zebra crossings right by the shops. So you don't need to to walk far from your car. And that is why zebra crossings are an essential and undervalued part of Bristol's streets. Without them, where would you stop?
Incidentally, the newsagent has the evening post warning about "Gangs Prowl the Cycle Path". They should put buses on it, it would be safer.