Thinking about how accessible Point A is from Point B by public transport here is a suggested model:
a = walking distance to connect with 1st public transport
b = waiting time between public transport connections
c = walking distance to get from last public transport to destination
t/d = total time for the journey divided by the distance as the crow flies between Point A and Point B.
What is an acceptable figure for a + c?
[ul]If you were young and fit?
If you had a mobility disability?
If you were a woman alone & it was night?
If you were a child or young person?
If you were over 60?
If the destination is a hospital?[/ul]
What locations in The Grove could not be accessed within this value of a + c?
What is an acceptable figure for b?
[ul]If you changed connections only once?
If you changed connections more than once?[/ul]
How many changes of transport are acceptable?
[ul]One train to another?
Train to bus?[/ul]
What is an acceptable value for t/d?
[ul]For example if Point A is Keperra and Point B the CBD?
If Point A is Upper Kedron and Point B is Prince Charles Hospital?[/ul]
Are there time windows when public transport blanks out?
[ul]Later in the evening?
From 6pm on Friday night?
On the weekends?
Before a certain time in the morning?[/ul]
It should be possible to describe transport corridors where it is relatively feasible to connect together by public transport.
[ul]For example to get from Ferny Grove station to Arana Leagues Club is relatively easy by train to Grovely then walk.
But to get from the far end of Lanita Rd in Ferny Grove to Prince Charles Hospital would be a challenge except by private car taxi or with a lot of pre-arrangement.
Yet to get to North Stradbroke Island is entirely feasible and efficient if you catch the right train.
Getting to Mitchelton Library is harder.[/ul]