Would the 20-minute neighbourhoods work for the ACT? They could. We calculated with OpenRouteService for each town and group centre, the area no more than 20 minute distant for a normal cyclist. The green colour is 10 min and red shows the 20-minute distance. Most of the city is covered.
I20-minute neighbourhoods are an interesting urban planning idea to decentralise the population from the city centres by making the local area more liveable.