zlacker

That is the real problem. Suburbs are mostly dense enough to support good transit, but you can't get good transit into cul-de-sacs. The bus takes too long getting down each one, and if you live in the next one it is a waste of time going down it - while if you do live down that one it has to because you don't live in walking distance of a road they can get down. No cul-de-sac alone has enough people to support the bus.

A subway could be dug under everything, but the $$$ are too high. A gondola system could potentially go between houses and so serve a few cul-de-sacs before coming out at a suburban station - this looks like the lowest cost answer, but it still isn't cheap.

>>bluGil+(OP)
You don't need to get into the bag-ends. You just need to let the last mile be walking, and make lots of walking paths that feel like shortcuts.

Then the busses can stay on the straight main roads while all the cars go get lost in the culled sacs, while people walking or on bike have direct paths.

Some studies show people will walk 3/4 of a mile, which is about 15 minutes. That's a "circle" that is 1.5 miles across, which is a an area of about 1132 acres (Ignore that straight roads don't have circles; pretend the "extra" area is support stuff, shops, whatever). 1132 acres of single family housing is 13,000 houses if "close", upwards of 20,000 units if we go to townhomes/rowhouses.

13k dwelling units all within a 3/4 mile walk from the edge; that should support at least one bus.