Jarrett Walker is an expert in public transport network planning who lives in Portland, Oregon, and is the author of the book *[Human Transit](https://humantransit.org/book)*.
He has been solving problems with urban bus networks for 25 years and runs an [international consulting practice](https://jarrettwalker.com/), leading the redesign of Auckland’s network in the mid-2010s.
He is familiar with Wellington, too, at one stage working on a series of proposals for public transport network changes, which didn’t go ahead.
