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Anson Stewart

@ansonstewart.com

Analysis + Research, @conveyal.com | Deputy Director, MIT Transit Lab | Massachusetts / California | Transportation PhD 🚲🚌

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25.08.2023
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Latest posts by Anson Stewart @ansonstewart.com

Osmix - OSM Toolkit for the Browser

Introducing Osmix, our new high-performance OpenStreetMap toolkit for TypeScript that can read, query, merge, and transform OSM PBFs in the browser

Try it for yourself at osmix.dev

04.03.2026 14:32 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Join me and the people who bring you the β€œNo Kings” march for this webinar on stopping 21st century American concentration camps. I’m honored to help introduce Andrea Pitzer, author of β€œOne Long Night: A Global History of Concentration Camps.” RSVP here for this March 5 mass call.

28.02.2026 01:55 πŸ‘ 6 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0

We're sharing a new browser-first toolkit for working with #OpenStreetMap tomorrow afternoon. Even if you missed the registration for #OpenThePaths 2026, stay tuned for more details and recordings of the sessions.

25.02.2026 18:24 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Post image

Have you noticed how navigation apps include walking & waiting for public transit, but excludes parking & walking for driving? After being late a few times πŸ˜…, we finally did. We got curious: what if these apps account for parking?

19.02.2026 15:39 πŸ‘ 76 πŸ” 33 πŸ’¬ 6 πŸ“Œ 3
Screenshot of MBTA Go app, showing Route 1 outbound departures at Massachusetts Ave @ Dana St

Screenshot of MBTA Go app, showing Route 1 outbound departures at Massachusetts Ave @ Dana St

Upcoming Route 1 departures:
πŸ™‚ 1 min
πŸ™‚ 2 min
πŸ™‚ 3 min
πŸ™ƒ 27 min (likely cancelled)
😑 32 min

#MBTA

#BusBunching

09.02.2026 20:44 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1

God Bless America: proceeds to name every country on the continent. πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯

09.02.2026 01:34 πŸ‘ 64 πŸ” 9 πŸ’¬ 1 πŸ“Œ 0
A train approaches the Ashland Green/Pink station on elevated tracks through a cityscape at sunset.

A train approaches the Ashland Green/Pink station on elevated tracks through a cityscape at sunset.

friendly reminder that post 5 pm sunsets are officially back πŸŒ†

05.02.2026 23:04 πŸ‘ 214 πŸ” 40 πŸ’¬ 4 πŸ“Œ 6
Screenshot of a map and table listing ICE warehouse purchase data.

Screenshot of a map and table listing ICE warehouse purchase data.

🚨 New: We built a visual tracker of the warehouses ICE is targeting across the US.

Working off an idea from @actualkatherine.bsky.social, we’ve mapped active searches, canceled deals, and linked state property records.

Explore the map here: tinyurl.com/ICEWarehouse...

04.02.2026 18:41 πŸ‘ 2852 πŸ” 1878 πŸ’¬ 100 πŸ“Œ 130
Preview
Chilean president declares state of catastrophe as wildfires kill at least 18 Fires blaze through 8,500 hectares, forcing 50,000 people to evacuate as firefighters struggle to extinguish flames

CAL FIRE’s thoughts are with the people and firefighters in Chile as catastrophic wildfires continue to burn across central and southern regions, forcing more than 50,000 people to evacuate and killing at least 18 people.
#ChileWildfires #WildfireResponse
www.theguardian.com/world/2026/j...

03.02.2026 01:15 πŸ‘ 60 πŸ” 15 πŸ’¬ 1 πŸ“Œ 2
UNITED STATES DISTRICT COURT FOR THE DISTRICT OF COLUMBIA
FRITZ EMMANUEL LESLY MIOT, et al.,
Plaintiffs,
Case No. 25-cv-02471 (ACR)
V.
DONALD J. TRUMP, et al.,
Defendants.
MEMORANDUM OPINION
On December 2, 1783, then-Commander-in-Chief George Washington penned: "America is open to receive not only the Opulent & respected Stranger, but the oppressed & persecuted of all Nations & Religions." More than two centuries later, Congress reaffirmed President
Washington's vision by establishing the Temporary Protected Status (TPS) program. See 8
U.S.C. Β§ 1254a (TPS statute). It provides humanitarian relief to foreign nationals in the United
States who come from disaster-stricken countries. It also brings in substantial revenue, with TPS
holders generating $5.2 billion in taxes annually. See Part VI.
Department of Homeland Security (DHS) Secretary Kristi Noem has a different take.?
eSec Noem
I just met with the President.
I am recommending a full travel ban on every damn country that's been flooding our nation with killers, leeches, and entitlement junkies.
Our forefathers built this nation on blood, sweat, and the unyielding love of freedom-not for foreign invaders to slaughter our heroes, suck dry our hard-earned tax dollars, or snatch the benefits owed to AMERICANS.
WE DON'T WANT THEM. NOT ONE.
6:52 PM - Dec 1, 2025 - 13.2M Views
' Letter from George Washington to Joshua Holmes (December 2, 1783).
2 Dkt. 90 (Second Am. Compl.) 1110 n.91. But see supra n.l.

UNITED STATES DISTRICT COURT FOR THE DISTRICT OF COLUMBIA FRITZ EMMANUEL LESLY MIOT, et al., Plaintiffs, Case No. 25-cv-02471 (ACR) V. DONALD J. TRUMP, et al., Defendants. MEMORANDUM OPINION On December 2, 1783, then-Commander-in-Chief George Washington penned: "America is open to receive not only the Opulent & respected Stranger, but the oppressed & persecuted of all Nations & Religions." More than two centuries later, Congress reaffirmed President Washington's vision by establishing the Temporary Protected Status (TPS) program. See 8 U.S.C. Β§ 1254a (TPS statute). It provides humanitarian relief to foreign nationals in the United States who come from disaster-stricken countries. It also brings in substantial revenue, with TPS holders generating $5.2 billion in taxes annually. See Part VI. Department of Homeland Security (DHS) Secretary Kristi Noem has a different take.? eSec Noem I just met with the President. I am recommending a full travel ban on every damn country that's been flooding our nation with killers, leeches, and entitlement junkies. Our forefathers built this nation on blood, sweat, and the unyielding love of freedom-not for foreign invaders to slaughter our heroes, suck dry our hard-earned tax dollars, or snatch the benefits owed to AMERICANS. WE DON'T WANT THEM. NOT ONE. 6:52 PM - Dec 1, 2025 - 13.2M Views ' Letter from George Washington to Joshua Holmes (December 2, 1783). 2 Dkt. 90 (Second Am. Compl.) 1110 n.91. But see supra n.l.

So says the official responsible for overseeing the TPS program. And one of those (her word)
"damn" countries is Haiti. Relevant here, three days before making the above post, Secretary
Noem announced she would terminate Haiti's TPS designation as of February 3, 2026. See 90
Fed. Reg. 54733 (Nov. 28, 2025) (Termination).
Plaintiffs are five Haitian TPS holders. They are not, it emerges, "killers, leeches, or
entitlement junkies." They are instead: Fritz Emmanuel Lesly Miot, a neuroscientist researching
Alzheimer's disease, Dkt. 90 (Second Am. Compl. (SAC)) 1 1; Rudolph Civil, a software
engineer at a national bank, id. 1 2; Marlene Gail Noble, a laboratory assistant in a toxicology
department, id. | 3; Marica Merline Laguerre, a college economics major, id. 9| 4; and Vilbrun Dorsainvil, a full-time registered nurse, id. 9|5. They claim that Secretary Noem's decision violates the Administrative Procedure Act (APA), 5 U.S.C. Β§ 706(2), and the Fifth Amendment of
the U.S. Constitution. The Government counters that the Court does not have jurisdiction, and, in any case, the Secretary did not violate the law.
Plaintiffs seek to stay the Secretary's decision under 5 U.S.C. Β§ 705 pending the outcome
of this litigation. See Dkt. 81 (Β§ 705 Mot.). To decide their motion, the Court considers first whether it has jurisdiction. It does. See Part II. It then considers: whether Plaintiffs have a
substantial likelihood of success on the merits; whether they will be irreparably harmed absent a
stay; and whether a merged balance of the equities and public interest analysis favors a stay. See
Part III. Each element favors Plaintiffs. See Parts IV, V, and VI.

So says the official responsible for overseeing the TPS program. And one of those (her word) "damn" countries is Haiti. Relevant here, three days before making the above post, Secretary Noem announced she would terminate Haiti's TPS designation as of February 3, 2026. See 90 Fed. Reg. 54733 (Nov. 28, 2025) (Termination). Plaintiffs are five Haitian TPS holders. They are not, it emerges, "killers, leeches, or entitlement junkies." They are instead: Fritz Emmanuel Lesly Miot, a neuroscientist researching Alzheimer's disease, Dkt. 90 (Second Am. Compl. (SAC)) 1 1; Rudolph Civil, a software engineer at a national bank, id. 1 2; Marlene Gail Noble, a laboratory assistant in a toxicology department, id. | 3; Marica Merline Laguerre, a college economics major, id. 9| 4; and Vilbrun Dorsainvil, a full-time registered nurse, id. 9|5. They claim that Secretary Noem's decision violates the Administrative Procedure Act (APA), 5 U.S.C. Β§ 706(2), and the Fifth Amendment of the U.S. Constitution. The Government counters that the Court does not have jurisdiction, and, in any case, the Secretary did not violate the law. Plaintiffs seek to stay the Secretary's decision under 5 U.S.C. Β§ 705 pending the outcome of this litigation. See Dkt. 81 (Β§ 705 Mot.). To decide their motion, the Court considers first whether it has jurisdiction. It does. See Part II. It then considers: whether Plaintiffs have a substantial likelihood of success on the merits; whether they will be irreparably harmed absent a stay; and whether a merged balance of the equities and public interest analysis favors a stay. See Part III. Each element favors Plaintiffs. See Parts IV, V, and VI.

Finally, the balance of equities and public interest favor a stay. The Government does not
cite any reason termination must occur post haste. Secretary Noem complains of strains unlawful immigrants place on our immigration-enforcement system. Her answer? Turn 352,959
lawful immigrants into unlawful immigrants overnight. She complains of strains to our economy. Her answer? Turn employed lawful immigrants who contribute billions in taxes into the legally unemployable. She complains of strains to our healthcare system. Her answer? Turn the insured into the uninsured. This approach is many thingsβ€” in the public interest is not one of them.
For the reasons below, the Court GRANTS Plaintiffs' Renewed Motion for a Stay Under
5 U.S.C. Β§ 705, Dkt. 81.

Finally, the balance of equities and public interest favor a stay. The Government does not cite any reason termination must occur post haste. Secretary Noem complains of strains unlawful immigrants place on our immigration-enforcement system. Her answer? Turn 352,959 lawful immigrants into unlawful immigrants overnight. She complains of strains to our economy. Her answer? Turn employed lawful immigrants who contribute billions in taxes into the legally unemployable. She complains of strains to our healthcare system. Her answer? Turn the insured into the uninsured. This approach is many thingsβ€” in the public interest is not one of them. For the reasons below, the Court GRANTS Plaintiffs' Renewed Motion for a Stay Under 5 U.S.C. Β§ 705, Dkt. 81.

BREAKING: Judge Ana Reyes, in DC, issues a stay of DHS Sec. Noem’s decision to end Haiti’s temporary protected status (TPS) designation, a decision that was to go into effect on Tuesday and could have ended legal status for up to 350,000 people overnight. storage.courtlistener.com/recap/gov.us...

03.02.2026 00:42 πŸ‘ 4277 πŸ” 1395 πŸ’¬ 43 πŸ“Œ 166

Almost daily protests at the New England ICE field office: fixice.org/protests1000...

#ICEout

docs.google.com/document/d/1...

02.02.2026 03:27 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
First Minnesota, by Andrew Owen track by Andrew Owen

I’ve been fascinated by the story of the 1st Minnesota since I first heard it. I wrote this to connect some dots that feel like they point in the same direction, even if they start 160 years apart.
andrewowen.bandcamp.com/track/first-...

02.02.2026 02:51 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Preview
Los 50 aΓ±os de la VicarΓ­a de la Solidaridad, el organismo que dio amparo a los perseguidos en la dictadura de Pinochet Fue creada al alero de la iglesia catΓ³lica y se convirtiΓ³ en uno de los mayores desafΓ­os al rΓ©gimen. Hoy, una exposiciΓ³n fotogrΓ‘fica en el Museo de la Memoria y los Derechos Humanos recuerda su trabaj...

Would be an interesting time for the Catholic Church in the US to resuscitate the idea of the Vicariate of Solidarty, the department the Chilean wing of the church established to contend with Pinochet's abuses. They were critical record keepers of all that happened.

elpais.com/chile/2026-0...

02.02.2026 02:34 πŸ‘ 66 πŸ” 20 πŸ’¬ 4 πŸ“Œ 1

1/ They did it again. More ADS-B spoofing drawing images in ADS-B Exchange. x.com/TheIntelFrog...

29.01.2026 19:26 πŸ‘ 85 πŸ” 28 πŸ’¬ 1 πŸ“Œ 6
Preview
Freshmen create website mapping ICE incidents Abby Manuel and Jack Vu noticed in April 2025 that some of the kids in the weekly classes they volunteered with had stopped showing up.

Two Rice University freshmen created a website mapping ICE incidents

ricethresher.org/article/fres...

29.01.2026 05:26 πŸ‘ 42 πŸ” 16 πŸ’¬ 1 πŸ“Œ 3
Steam rising from the Chicago River on a cold morning

L train approaching Lake St bridge on the left, skyline in the background

Steam rising from the Chicago River on a cold morning L train approaching Lake St bridge on the left, skyline in the background

Steam rising from the Chicago River on a cold morning

28.01.2026 17:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1
A transformer is painted with the image of Liam Ramos in his blue bunny hat at the corner of Vin Scully and Stadium Way outside of Dodger Stadium.

A transformer is painted with the image of Liam Ramos in his blue bunny hat at the corner of Vin Scully and Stadium Way outside of Dodger Stadium.

Corner of Vin Scully and Stadium Way, Dodger Stadium.

27.01.2026 23:02 πŸ‘ 4836 πŸ” 1066 πŸ’¬ 85 πŸ“Œ 49
Video thumbnail

Seen in Los Angeles

(Credit: Zurita Carpio)

25.01.2026 19:35 πŸ‘ 11492 πŸ” 4414 πŸ’¬ 154 πŸ“Œ 172

Half the street corners around here have people--from every walk of life, including republicans--standing guard to watch for suspicious vehicles, which are reported to a robust and entirely decentralized network that tracks ICE vehicles and mobilizes responders.

22.01.2026 03:58 πŸ‘ 7454 πŸ” 646 πŸ’¬ 8 πŸ“Œ 36
Post image

Tomorrow’s front page of the Minnesota Star Tribune: Jan. 23, 2026

22.01.2026 23:19 πŸ‘ 14684 πŸ” 7004 πŸ’¬ 393 πŸ“Œ 530
Preview
LUCE (Massachusetts) whistle by Sokath | Download free STL model | Printables.com

If you have a 3D printer, you can now download software to print out lots of whistles, all embedded with the phone number for LUCE, the local immigrant rapid-response group.
www.printables.com/model/156587...

22.01.2026 01:35 πŸ‘ 149 πŸ” 101 πŸ’¬ 3 πŸ“Œ 0
Preview
Bearing Witness New England

Email list for the Wednesday gatherings (going for 40 weeks now) is at bearingwitnessne.org ( @bearingwitnessice.bsky.social)

There are gatherings other days of the week too.

22.01.2026 01:14 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
"ICE OUT, MA stands with MN" on a cardboard sign in the snow in the foreground

People marching and holding up signs, with the New England ICE Field Office being used as an illicit detention center in the background

"ICE OUT, MA stands with MN" on a cardboard sign in the snow in the foreground People marching and holding up signs, with the New England ICE Field Office being used as an illicit detention center in the background

Massachusetts stands with Minnesota

Over 400 people at the New England ICE field office today demanding #ICEout now

21.01.2026 20:56 πŸ‘ 14 πŸ” 2 πŸ’¬ 1 πŸ“Œ 1

My daughter took her first trip on public transit today without adult supervision. She and her friends went to protest against ICE abductions.

Or as I am thinking about it: Using a public good for the public good.

21.01.2026 00:48 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
The left wing of an airplane extending into the distance. The northern lights are showing a green/red/blue hue with some stars visible and scattered throughout the left side of the image

The left wing of an airplane extending into the distance. The northern lights are showing a green/red/blue hue with some stars visible and scattered throughout the left side of the image

The left wing of an airplane extending into the distance. The wingtip is lit up red from the beacon. The aurora shows sections of distinct pillars in a white, red, and blue gradient. Below are city lights

The left wing of an airplane extending into the distance. The wingtip is lit up red from the beacon. The aurora shows sections of distinct pillars in a white, red, and blue gradient. Below are city lights

The left wing of an airplane extending into the distance. The aurora is lightly showing over a lit up city.

The left wing of an airplane extending into the distance. The aurora is lightly showing over a lit up city.

The left wing of an airplane extending into the distance. The wingtip is lit up red from the beacon. The aurora is a gradient of white, red, and blue. Below are city lights

The left wing of an airplane extending into the distance. The wingtip is lit up red from the beacon. The aurora is a gradient of white, red, and blue. Below are city lights

That red eye was absolutely worth it!

20.01.2026 13:11 πŸ‘ 101 πŸ” 12 πŸ’¬ 4 πŸ“Œ 0
And what can we say about the cowardly Republicans in Congress, who are still sustaining Trump even though many of them – perhaps most of them – are privately appalled by his behavior? It would take just eight of these people β€” four Republican senators and four Republican House members β€” to switch sides and caucus with the Democrats to end G.O.P. control of Congress and eliminate much of Trump’s power. But taking such a step would mean risking Trump’s wrath by standing up and acting like patriots, rather than knuckling down and averting their eyes as Trump descends into madness.

How did a great, sophisticated nation, one of the world’s longest-standing republics, end up so fragile that it can be undone by one man’s dementia? That’s an important question, the answer to which I believe lies in the straight line from Bush vs Gore and the Roberts Supreme Court, to January 6th, to the execution of Renee Good. However, what’s more important is that we realize where we are right now, that we don’t try to sugarcoat and sanewash what’s happening: A petulant, violent and deranged individual is running America.

And what can we say about the cowardly Republicans in Congress, who are still sustaining Trump even though many of them – perhaps most of them – are privately appalled by his behavior? It would take just eight of these people β€” four Republican senators and four Republican House members β€” to switch sides and caucus with the Democrats to end G.O.P. control of Congress and eliminate much of Trump’s power. But taking such a step would mean risking Trump’s wrath by standing up and acting like patriots, rather than knuckling down and averting their eyes as Trump descends into madness. How did a great, sophisticated nation, one of the world’s longest-standing republics, end up so fragile that it can be undone by one man’s dementia? That’s an important question, the answer to which I believe lies in the straight line from Bush vs Gore and the Roberts Supreme Court, to January 6th, to the execution of Renee Good. However, what’s more important is that we realize where we are right now, that we don’t try to sugarcoat and sanewash what’s happening: A petulant, violent and deranged individual is running America.

This post by @pkrugman.bsky.social on "Sundowning" is worth reading.

paulkrugman.substack.com/p/its-sundow...

Agree with this conclusion:

20.01.2026 15:57 πŸ‘ 509 πŸ” 188 πŸ’¬ 23 πŸ“Œ 15

I speak Midwestern:
🟒 β€œHey man, you sure about that?”
🟑 β€œTake it easy, buddy”
🟠 β€œIt’s time for you to head home my friend”
πŸ”΄ β€œI don’t plan to let you do that”
⚫️ [you are under the ice in a lake that will not thaw until Memorial Day]

18.01.2026 01:54 πŸ‘ 248 πŸ” 62 πŸ’¬ 1 πŸ“Œ 1

This guide here is incredible. People in the Twin Cities have really thought this out and created an extremely robust system that people can just drop into.

17.01.2026 18:39 πŸ‘ 76 πŸ” 20 πŸ’¬ 2 πŸ“Œ 0

I heard from someone who went to the TRB affiliate meeting on Tuesday that there were ~11k registrants and ~10k attendees this year. Compared to ~14k last year and almost 16k pre-COVID?

Also seemed like exhibit hall was a ghost town. Caliper used to be front row there, didn't send anyone this year.

17.01.2026 20:44 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0