Safe Systems Civil Engineer's Avatar

Safe Systems Civil Engineer

@cityengineer.bsky.social

PE. Dengineer. Safe network builder for people walking, in wheelchairs, cycling & driving. Train lover. Views my own - not speaking for any employer/board. Public sources only.

590 Followers  |  1,065 Following  |  1,980 Posts  |  Joined: 20.02.2024
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Posts by Safe Systems Civil Engineer (@cityengineer.bsky.social)

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People Get in Way More Fatal Car Crashes on Days Hot New Music Drops It seems that when a major music artist releases a new album of certified bangers, one of those bangers is your car banging into a tree.

The rise in fatalities was more pronounced in cars equipped with Apple CarPlay.
www.vice.com/en/article/p...

03.03.2026 03:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

It’s nothing to him really … one of many around the world

03.03.2026 02:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Dutch bike networks evolved. Designers watched behavior and chosen routes, and then formalized them.

02.03.2026 15:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Definitely true for people on foot too!

02.03.2026 01:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Legal scarcity is not an accident. It’s a policy choice.The equity windfall for incumbents is financed by higher rents and higher purchase prices for young families.
Some states leaders are starting to change the rules.
They must stop enforcing the scarcity premium instead of the American Dream.

02.03.2026 00:04 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Housing should never be a discretionary gift. It should be a fundamental right.
#BackTo3
@mayor.nyc.gov
@kimdriscollma.bsky.social
@samseder.bsky.social
@davidsirota.com

01.03.2026 23:02 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Even under Reagan and Clinton, leaders who claimed to favor markets , we didn’t legalize market housing growth, instead choosing to subsidize scarcity.

Why? Rising home values made scarcity politically popular. Incumbent property owners benefited and talked only of character and traffic.

01.03.2026 19:40 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

We moved from building public housing to funding ongoing rent subsidies and developer tax credits.

Spending rose. Supply didn’t match.

That’s not a free market, it’s permanent subsidy layered on top of constrained zoning to protect distorted equity growth.

01.03.2026 19:38 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Since the 1970s, federal low-income housing subsidies (rental aid + LIHTC) have risen over 4Γ— per capita in real terms. We didn’t deregulate. We subsidized around scarcity instead of legalizing enough homes to keep them affordable.

01.03.2026 19:36 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Allow the housing market to work.
substack.com/@danmurphy67...

01.03.2026 19:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image 28.02.2026 23:35 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Only 5 to 10 % of all single-family homeowners in the US have the right to add an apartment to their home. Why isn’t it higher in blue progressive states that claim to care about the working class?

28.02.2026 22:58 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Elizabeth Warren tells Democrats to use new playbook
YouTube video by CNN Elizabeth Warren tells Democrats to use new playbook

Right on. How are you going to lower my housing costs…?? Talk about nothing else.
youtube.com/shorts/g3uQs...

28.02.2026 21:32 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

What prevents any state from making the duplex the by right base unit, giving any single family owner the right to add an apartment ?

28.02.2026 21:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Affordability. Allow much more housing by right across the metro and province. Highest housing multipliers in N America!

28.02.2026 20:51 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

What about behind you ?
Safe connected AAA ! πŸ’―

28.02.2026 16:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Only true in short term at local level and depends on the amount of local upzoning allowed. If the state were to upzone metro wide supply would grow sufficiently to lower the value of land. It worked in 1970 and can again. It will take time but should be the North Star for the grandkids
#BackTo3

28.02.2026 15:56 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"Single family zoning is a subsidy to homeowners. It's a subsidy that's paid by renters by making housing in the area less affordable. And given that the average homeowner has 40 times the net worth of the average renter, it means that this is a subsidy to the rich from the poor."

28.02.2026 11:35 β€” πŸ‘ 15    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0

Arterials are not overloaded because engineers failed.

They’re overloaded because:
The metro system forces cross-municipal travel
Local zoning suppresses proximity.
State funding reinforces hierarchy

Engineers are managing symptoms of a land-use geometry problem.

28.02.2026 14:00 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Should state safety funding be conditional on zoning reform?

Should planning approvals require quantified exposure modeling?

Should severe injury risk per capita be tied to housing allocation?

28.02.2026 13:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Safe Systems manage kinetic energy and exposure.
Zoning determines exposure before a single stripe is painted.

28.02.2026 13:44 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Land use and network design set exposure, the prevailing speed environment, trip length, and congestion/queue conditions that drive risky behaviors often before an engineer is asked to provide comment. A key part of #safesystems

28.02.2026 13:43 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Are high multipliers legal modern redlining?

28.02.2026 13:27 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Bad Data Alert: Council Tears Apart DOT Daylighting Study - Streetsblog New York City The internal review, obtained by Streetsblog, dismantles DOT's fear-mongering.

Universal daylighting debate
nyc.streetsblog.org/2025/11/10/b...

28.02.2026 13:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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How Zoning Won In 1926, the Supreme Court’s Euclid decision enshrined zoning in US cities. On its 100th anniversary, academics gathered to reflect on the landmark ruling’s mixed legacy.

The 20th century’s Original Sin

www.bloomberg.com/news/article...

27.02.2026 10:23 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Densify sprawl. ADUs by right. Allow mixed commercial. SFH conversions by right … it adds up to better density and more demand for transit and AAA bike

28.02.2026 03:09 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

It’s affordable for incumbents but for the bottom 1/2 we need:

#BackTo3 = Homes cost ~3Γ— local median income (again like in 1970)

28.02.2026 02:59 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

#BackTo3 = Homes cost ~3Γ— local median income (again like in 1970)

28.02.2026 02:50 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The Middle-Class New Deal by A. Mechele Dickerson - Paper Scholarship is a powerful tool for changing how people think, plan, and govern. By giving voice to bright minds and bold ideas, we seek to foster understanding and drive progressive change.

This is the path #BackTo3 that will unlock true middle class growth again
www.ucpress.edu/books/the-mi...

28.02.2026 02:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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New NBER paper finds that US crash deaths rise by ~15% on dates of major album releases.

Distraction from smartphones is a likely culprit.

www.nber.org/papers/w34866

26.02.2026 18:53 β€” πŸ‘ 30    πŸ” 9    πŸ’¬ 4    πŸ“Œ 1