I wonder if we are being too purist about the 15-minute city, and especially at neighbourhood level. I seem to recall that when Edinburgh was first contemplating a development strategy based on a 20-minute city concept, they mapped the city to find areas which were not in reach of a basic set of facilities - schools, health centres, library, parks, grocery stores - within 20 minutes travel time by active travel and the areas identified were relatively few. It did give a good guide to where the gaps in provision were to decrease these areas further. But access meant reaching any such facility anywhere and not all necessarily within in the same neighbourhood. This access map is a long way from the ideal type 15 minute city concept, but is a reasonable proxy idea for established cities where re-development is challenging.
I wonder if we are being too purist about the 15-minute city, and especially at neighbourhood level. I seem to recall that when Edinburgh was first contemplating a development strategy based on a 20-minute city concept, they mapped the city to find areas which were not in reach of a basic set of facilities - schools, health centres, library, parks, grocery stores - within 20 minutes travel time by active travel and the areas identified were relatively few. It did give a good guide to where the gaps in provision were to decrease these areas further. But access meant reaching any such facility anywhere and not all necessarily within in the same neighbourhood. This access map is a long way from the ideal type 15 minute city concept, but is a reasonable proxy idea for established cities where re-development is challenging.