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Adrian Pietrzak

@zoningwonk

PhD student at Princeton studying urban politics and how to make our cities fairer and more affordable. He/him πŸ³οΈβ€πŸŒˆ apietrzak.org

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Latest posts by Adrian Pietrzak @zoningwonk

Amtrak NEC wires already kinda do this when the weather goes from 82 to 30 in less than 24 hours

11.03.2026 20:19 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Also this is terrible winning coalition politics - the places that vote for Democrats drive the least!

11.03.2026 15:23 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

"the top 20 percent of Americans by income spent almost three times more on gas in 2020 than the bottom 20 percent"

11.03.2026 12:34 πŸ‘ 68 πŸ” 27 πŸ’¬ 2 πŸ“Œ 0
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Instead of admitting the failures of US road safety, many traffic engineers & transport professionals wag their finger: β€œWe should be looking at deaths per distance driven, not deaths per capita.”

By that metric, the US is bad, but not quite as terrible.

11.03.2026 12:07 πŸ‘ 97 πŸ” 9 πŸ’¬ 7 πŸ“Œ 2

Traffic volumes could decrease up to 11 percent, representing almost 65,000 fewer weekday car trips; transit use would jump by almost 25 percent in the most optimistic scenario; and people who still decided to drive would save up to 24 hours of time lost in traffic.

10.03.2026 19:45 πŸ‘ 85 πŸ” 12 πŸ’¬ 2 πŸ“Œ 8

Oh HELLO.

TIL that this report considered a scenario that included South Arlington! And that only 16% of workers driving to this study area earned less than $75K.

10.03.2026 20:05 πŸ‘ 33 πŸ” 2 πŸ’¬ 2 πŸ“Œ 1

BBL will always be Borough Block and Lot, to me

06.08.2025 21:22 πŸ‘ 82 πŸ” 7 πŸ’¬ 6 πŸ“Œ 2

This is, effectively, congestion pricing for LAX. (Yes, it would be more effective if it applied to all cars.)

The new fee will go into effect once the automated people mover opens.

Seems smart to couple this new, free transit service with a disincentive to take a car to the airport.

10.03.2026 20:03 πŸ‘ 28 πŸ” 2 πŸ’¬ 2 πŸ“Œ 1
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I don't think I've ever seen this law enforced in Philly, where I'd guess a good quarter of all cars tint their front side windows to 35% or less

08.03.2026 18:31 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I'm very close to becoming a single issue tinted windows voter, which means you can't make eye contact with the driver to figure out if they're going to run you over or not

08.03.2026 18:27 πŸ‘ 12 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

The fundamental flaw in thinking you can win back Republican voters by bettering their economic condition is that these people view their wealth not through their objective material status, but who they feel better and richer than.

08.03.2026 18:15 πŸ‘ 32 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

New Buy America rules just dropped

08.03.2026 16:17 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Well I keep saying we need a Pigouvian tax on gas …

06.03.2026 18:42 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Look, on the one hand, there’s a wildly illegal war going on & we’re murdering people on the high seas & it should immediately end this presidency. But on the other hand, now we’re really facing the β€œstagflation” that never existed but we pretended to be obsessed with when Joe Biden was president.

06.03.2026 14:15 πŸ‘ 95 πŸ” 37 πŸ’¬ 4 πŸ“Œ 2

You’ll never guess when in this chart we were obsessed with recession, stagflation, & the terrible economy…

06.03.2026 14:20 πŸ‘ 141 πŸ” 42 πŸ’¬ 6 πŸ“Œ 0

πŸ’ƒπŸΌπŸ’ƒπŸΌπŸ’ƒπŸΌ

06.03.2026 15:22 πŸ‘ 17 πŸ” 2 πŸ’¬ 0 πŸ“Œ 2
Preview
Mayor Parker backs legislation to boost housing development around SEPTA stations As part of her effort to build or repair 30,000 homes, the mayor is pushing for more housing near mass transit.

These bills are a welcome step toward more housing near transit, but their scope doesn't quite address our massive housing shortage.

The entire Broad Street Line, Regional Rail, and trolley network aren't covered, and parking mandates near transit remain intact.

1/

05.03.2026 16:54 πŸ‘ 15 πŸ” 6 πŸ’¬ 1 πŸ“Œ 1

Actually some jobs should be automated.

22.02.2026 17:17 πŸ‘ 24 πŸ” 3 πŸ’¬ 2 πŸ“Œ 0
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This 1960 picture book did NOT foresee the great downzoning coming in 1961 πŸ˜”

05.03.2026 01:49 πŸ‘ 74 πŸ” 4 πŸ’¬ 1 πŸ“Œ 2
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Interesting parallel between the failure of DC's H Street streetcar and CalHSR: both gambled on prioritizing the least value segments on the idea that the full project would need to be completed, only to have the whole thing go bust.
thetransitguy.substack.com/p/why-the-dc...

04.03.2026 21:35 πŸ‘ 49 πŸ” 9 πŸ’¬ 7 πŸ“Œ 3

Wait... but I thought it would only cost $20 billion to end homelessness nationally!

05.03.2026 16:27 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

We spent four years taking about how Joe Biden blew up the debt with the ARP & about how we couldn’t afford things like student loan debt relief.

Republicans, however, will continue to enjoy the deficit hawks & fiscal conservative labels, as they have since Reagan. It is an Iron Law of πŸ‡ΊπŸ‡Έ politics.

05.03.2026 14:56 πŸ‘ 161 πŸ” 49 πŸ’¬ 4 πŸ“Œ 2
gigantic outlines of the McCook reservoir looming 3000' over Chicago in mirrored glass

gigantic outlines of the McCook reservoir looming 3000' over Chicago in mirrored glass

I love this illustration of Chicago's flood control reservoirs, because it looks like a rejected entry in the WTC competition.

02.03.2026 00:47 πŸ‘ 61 πŸ” 7 πŸ’¬ 5 πŸ“Œ 3

Excellent ruling that will hopefully raise the criteria bar for all historic districts going forward. Create small thematic districts with one significant historical narrative instead of grouping 1000+ properties with a "period of significance" over a century as backdoor density restrictions

02.03.2026 18:29 πŸ‘ 16 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

I think one of Philly's biggest problems is it doesn't hold onto its college students unlike New York or Boston (because there are no jobs here unless you're willing to reverse commute)

02.03.2026 20:00 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Housing costs now top crime as Chicago voters’ biggest worry, poll finds The results represent a shift from 2022, when a similar poll by Illinois Realtors found crime and gun violence led voters’ worries by a wide margin.

Housing costs now top crime as Chicago voters’ biggest worry, poll finds

Join @abundanthousingil.bsky.social if you want to fix this

www.chicagobusiness.com/real-estate/...

02.03.2026 19:26 πŸ‘ 21 πŸ” 3 πŸ’¬ 1 πŸ“Œ 1

Painful to read this and think about the 2021 coup attempt, which was as blatant as it gets. An utter failure of US elites to seize the moment when everybody saw the threat right in front of their eyes.

If we have history books in the future, they will be unkind.

24.02.2026 16:35 πŸ‘ 2785 πŸ” 608 πŸ’¬ 37 πŸ“Œ 31

broke: each transit agency buys their own rolling stock

woke: transit agencies work together on procurement

bespoke: federal DOT coordinates orders, generating economies of scale

24.02.2026 19:32 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The Netherlands banned investor ownership of housing in 2022.

It did not reduce home prices.

New homeowners had higher incomes, were more often Dutch-born, moved shorter distances, and stayed longer than the renters whom they replaces.

I do not think this was an equitable outcome.

24.02.2026 18:45 πŸ‘ 424 πŸ” 84 πŸ’¬ 17 πŸ“Œ 10
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By striking down Trump's IEEPA tariffs today, the Supreme Court nearly halved the effective tariff rate, down to 9.1% from 16.9%.

But rates are still far above pre-2025 levels.

20.02.2026 18:26 πŸ‘ 179 πŸ” 69 πŸ’¬ 1 πŸ“Œ 3