Jarrett Walker

Jarrett Walker

@humantransit.bsky.social

Public transit planning consultant and commentator. Author of the book “Human Transit” and the blog HumanTransit.org. The consulting firm is jarrettwalker.com. Also obsessed with literature and plants.

23.1K followers4.6K following2.7K posts

Drove from San Francisco to Monterey (120 mi) today, and have no energy left. Driving is dangerous, stressful, and exhausting. Some people love it and are good at it, but it's appalling that we force so many people to do it just so they can have lives.

This guy who leads the opposition to the SF Bay Area's transit rescue measure RTM naturally talks about how badly some projects have been managed. Transit advocates are far more angry about this than he is. But that doesn't mean we'll vote to destroy transit as he proposes.

Jarrett Walker reposted

This historical anecdote makes me absurdly happy. *Of course* a mathematician would have invented bus service!

Jarrett Walker@humantransit.bsky.social

Blaise Pascal invented public transit in the 1660s. As the greatest mathematician of his age, he saw the math problem that only transit would solve. I wrote about this amazing story here. humantransit.org/2024/12/one-...

Jarrett Walker reposted

Jarrett Walker reposted

I conceptually understood but still did not realize exactly how good interlining was until I was at the @humantransit.bsky.social workshop looking around at everybody's maps and seeing how much you could push core service while still getting service "out there" by branching/interlining

Star:Line Chicago@starlinechicago.bsky.social

This is also what makes interlining and thru-running effective strategies for regional rail: demand further out in less-dense areas is proportionally provided, but as lines converge and serve denser parts of the region, routes combine to provide lower headways and higher service frequencies.

Can someone in the SF Bay Area explain to me why the campaign for Measure RTM is about TRAFFIC but not HOUSING? How many people really have to travel at rush hour anymore? Housing is the #1 issue in the Bay Area, and housing depends on transit. Yet there is virtually no mention of it.

Three weeks out from a very close race for Oregon governor I walked 3 miles across Portland yesterday and saw only one of these. I am also hearing from progressives who are voting Republican on this race, theorizing that with a democratic legislature, a republican governor can't do much harm. 1/

Why? A lot of Democratic anger at the Oregon Democratic machine. Perceptions that it cares for staff and public employee unions more than for voters. The people I'm hearing this from are full-throated progressive Democrats, maybe not DSA but not Blue Dog either. 2/

Just passing on what I'm hearing. I have voted Democratic all my life, but I really wish we could have more competitive primaries, or better still, open primaries and ranked choice. 3/3

Portland politics: does anyone want to suggest how I should vote in city council district 3? I value honesty, intelligence, and proven experience in government. I don't much care about the left vs moderate wars, but I would like to vote for a lower level of drama on the council.

The US election season has reached the point where there is nothing new for analysts to say. This is a good time to remember that human behavior is not predictable. If it were, that would make you no better than a machine. Celebrate how great it is that nobody knows the future.

If you're in a US city that is facing a transit funding referendum in November, such as the San Francisco Bay Area, here's my quick guide on how to think about transit measures in general, and the forces behind them. humantransit.org/basics-shoul... Comments welcome.

humantransit.orgBasics: Should I Vote for a Transit Tax? — Human TransitIn the United States and Canada, voters are sometimes asked to decide whether to raise taxes to fund transit improvements.  I’m often asked whether I support these things.  I don’t like telling people...

The US has elections for transit funding measures coming up in several cities. So I just updated my general advice about how to vote in these elections. It's more complicated than "just vote yes". Even I as a transit advocate have voted no sometimes. humantransit.org/basics-shoul...

humantransit.orgBasics: Should I Vote for a Transit Tax? — Human TransitIn the United States and Canada, voters are sometimes asked to decide whether to raise taxes to fund transit improvements.  I’m often asked whether I support these things.  I don’t like telling people...

Chicago's Jewelers Row. 8:30 AM on a sunny Saturday. People gather underneath the soft rumble of the elevated trains, attracted by a prosperous coffeehouse. We don't always need to fear elevated transit.

Jarrett Walker reposted

Geometry: "The most important concept in transport planning. Everything else is footnotes." ~Jarrett Walker (@humantransit.bsky.social).

Brent Toderian@brenttoderian.bsky.social

It’s remarkable how many people can move on a street when those people don’t feel the need to always take a massive car with them. Mobility in cities is about space.

Jarrett Walker reposted

This week NITA is the proud host of @humantransit.bsky.social’s Intensive Transit Network Design Course in which local Chicago planners, advocates, developers and more have come together to dive deep into transit planning and how to use it to create better cities and towns. 🧑‍🏫

Jarrett Walker reposted

Hey, #Milwaukee people, Jarrett Walker is talking about redesigning our #bus network to address our #publictransit financial challenges. Check it out and take the survey. 🚌

"It is therefore that the older I grow, the more apt I am to doubt my own judgment, and to pay more respect to the judgment of others." Ben Franklin I like this quotation because it suggests possibilities for both the young and the old.

Learn to be offended by surveys like this one from Wells Fargo bank. It's gaslighting. It wants to you recommend giant corporations based on the behavior of one front-line employee (rather than the behavior of the management). Would anyone really do that?

Jarrett Walker reposted

“Lower-income people will generate traffic congestion if you force them to [by not providing alternatives, such as public transport]” 🎯

Jarrett Walker@humantransit.bsky.social

This post may be the most effective argument right now for letting public transit wither. It may not make sense to you, but it feels right to many, many people. So in a short new post, I talk through what's going on here, and how to engage with it. humantransit.org/2026/09/the-...

Jarrett Walker reposted

> In whatever room you are in, ask: ‘Who is not in the room?’

Jarrett Walker@humantransit.bsky.social

This post may be the most effective argument right now for letting public transit wither. It may not make sense to you, but it feels right to many, many people. So in a short new post, I talk through what's going on here, and how to engage with it. humantransit.org/2026/09/the-...

Jarrett Walker reposted

Replacing public transit autonomous vehicles would be neither fair nor effective even if they were widely available and safe. I would have thought this obvious but it's good to have the arguments spelled out clearly.

Jarrett Walker@humantransit.bsky.social

This post may be the most effective argument right now for letting public transit wither. It may not make sense to you, but it feels right to many, many people. So in a short new post, I talk through what's going on here, and how to engage with it. humantransit.org/2026/09/the-...

Jarrett Walker reposted

induced demand illustrated

City Observatory@cityobservatory.bsky.social

Carmaggedon? Here are two snapshots of weekday morming commute travel speeds on Portland freeways, one is from before the Rose Quarter shutdown, one is from after. Can you tell which is which?

La versión en español de mi libro *Human Transit* ha dado otro gran paso adelante. El trabajo de traducción ha concluido y ahora estamos revisándolo. ¡Espero que se publique antes de la primavera de 2027!

On this anniversary of the 9/11 attacks, the US government is unlikely to express the appropriate gratitude to the Canadian people for all their efforts to help on that day and the days after. So I suggest retweeting Canadians congratulating themselves.

Mark Carney@mark-carney.bsky.social

On 9/11, the people of Gander stepped up. They showed the very best of Canada.