Comment by bombcar

1 hour is a fair measure in my opinion, the average commute time is about 30 minutes in the US:

> In 2019, the average one-way commute in the United States increased to a new high of 27.6 minutes [27.6]

Which would mean the reasonable "maximum" is going to be about an hour one-way. Some will commute further but it'll drop off very fast. You can actually see it in action if you graph house prices on a map around an urban area; once you are outside commuting distance from the center prices start going down. People will still commute to the edges of the metro, but the numbers who want to decreases.

And a train can create "pockets" further away by mileage.

[27.6] https://www.census.gov/newsroom/press-releases/2021/one-way-...