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Greg GRIFFIN @gregpgriffin.bsky.social · 1d

Not that I know of. But, a cheeky jurisdiction could translate LTS to the infrastructure bike route versus lane codes in Google’s data.

Years ago, I did run LTS for the Austin region, which formed the basis of our regional planning maps and then also for local navigation maps like San Marcos’.

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Greg GRIFFIN @gregpgriffin.bsky.social · 14d

Working in transportation, I’d thought algorithms sent more streetscape Captchas to me. But I think tech companies are using is to train AIs to automate 🚗

Greg GRIFFIN @gregpgriffin.bsky.social · 15d

Transportation pros know that economics are a small part of travel modeling. How quixotic are our forecasts?

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Greg GRIFFIN @gregpgriffin.bsky.social · 15d

“… when major government policies shift overnight, making long-term economic projections is quixotic at best. Still, some people do it for a living.” @jeffnyc.bsky.social in www.nytimes.com/2025/09/12/b...

Believe in A.I.? Buy Beaten-Down Value Stocks.

www.nytimes.com

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Greg GRIFFIN @gregpgriffin.bsky.social · 15d

Welcome back to the West Coast and enjoy your bike rides!

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Greg GRIFFIN @gregpgriffin.bsky.social · 15d

In Portland, I get very different transit options using Google Maps vs Transit app, so usually check both. Kind of frustrating, but also happy to have info that was just guessing some years ago. Is your commute e-bikable?

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Reposted by Greg GRIFFIN

TREC at PSU @trecpdx.bsky.social · 20d

Last week, a plot of land in North Portland felt a shake—not one caused by an earthquake, but by a machine known as T-Rex. PSU researchers were simulating a minor quake.

Hear from researchers Arash Khosravifar and Diane Moug of @maseehcollege.bsky.social on @opb.org: www.opb.org/article/2025...

PSU researchers simulate earthquake to test soil-strengthening treatment

Researchers at Portland State University tested a soil treatment to fortify soil against liquefaction. We'll hear from two researchers to learn more.

www.opb.org

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Reposted by Greg GRIFFIN

Taylor Griggs @taylorgriggs.bsky.social · 21d

Is this the first time in history a sitting Portland City Council member has corked an intersection during a bike ride? Cc: @councilorgreen.bsky.social

A group rode/walked to City Hall today ahead of the council discussion on Vision Zero, led by @councilortkl.bsky.social.

Councilor Mitch Green standing with a Nike bike at an intersection

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Reposted by Greg GRIFFIN

Tara Goddard, PhD @drtaragoddard.com · 27d

Request: Do any of y'all use TransCAD in your work? If so, would you be willing to do a zoom talk in my class this term? I can't offer any real money, but I'll venmo you coffee money at least. 😏🙏

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Greg GRIFFIN @gregpgriffin.bsky.social · 27d

Maybe a good opportunity to pull in an MPO modeler guest lecture? We used TransCAD in grad school in Austin, but I’m no regular user.

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Greg GRIFFIN @gregpgriffin.bsky.social · Sep 3

The sub-text for me is not about artificial intelligence, but rather about ways that people are thinking about the future of society with technology. Ironically, not all urban planning education programs, engage directly with serious thinking about the future, regardless of ideology.

Greg GRIFFIN @gregpgriffin.bsky.social · Sep 3

Urban planners and students concerned with the future should peruse the Effective Altruism discourse, which this Times piece (re)introduces.
www.nytimes.com/2025/08/04/t...

The Rise of Silicon Valley’s Techno-Religion

www.nytimes.com

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Greg GRIFFIN @gregpgriffin.bsky.social · Sep 2

A+!
There’s a comma after 🍉, right? If not, plz explain cause I’m curious. #summerdining

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Reposted by Greg GRIFFIN

bikepedantic @bikepedantic.bsky.social · Aug 29

Hive mind: Besides Bogota, and a few US university campuses, anyone know of any free bikeshare systems?

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Greg GRIFFIN @gregpgriffin.bsky.social · Aug 29

Urban planning faculty can integrate indigenous futurism in curriculum to help span thinking on time and who we plan with and for.
www.underscore.news/culture/indi...

Indigenous Futurism Brings Fresh Perspectives to Pop Culture - Underscore Native News

Sadekaronhes Esquivel (any pronouns) is a Kanien’kehà:ka and Mexican Indigenous artist and writer. Esquivel utilizes illustration and gaming to create worlds and stories that promote imaginative futur...

www.underscore.news

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Greg GRIFFIN @gregpgriffin.bsky.social · Aug 29

Big data can both answer intractable questions, and further inequalities. Here’s how I’ve navigated the paradox of data for bicycle transport planning.
gregpgriffin.myportfolio.com/how-not-to-l...

Greg P. Griffin - How Not to Lie with Big Data

Greg Griffin’s research analyzes how planners and publics work together with technology to improve transportation, civic engagement, and health. Currently, he is writing a book called Transport Truths...

gregpgriffin.myportfolio.com

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Reposted by Greg GRIFFIN

Kate Lowe (she/hers) @kateontransport.bsky.social · Aug 28

Have heard reasons to be skeptical of big consulting firms like McKinsey. Do any of you know much about SLALOM? Including work in public transit?

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Reposted by Greg GRIFFIN

Jennifer Dill, Ph.D. @jenniferdillpsu.bsky.social · Aug 26

Speaking of street transformations, the new restrictions motor vehicles on Pike Place outside the market made me enjoy the place far more then my visit in 2008.
The pilot project was a window of opportunity (street repair work), a common origin for street transformations.(repost with gif)

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Reposted by Greg GRIFFIN

Kea Wilson @keawilson.bsky.social · Aug 7

Wrote about a company that's trying to give folks who want to buy used e-bikes an alternative to the sketchy craigslist ad or the local bike shop that has two bikes in stock, and how this whole market could become a lot bigger as trump's trade policy reshapes the industry.

This Company Wants to Help More Americans Buy Used E-Bikes — Streetsblog USA

Trade wars in Washington are having a chilling effect on the U.S. bike market. Could selling more used cycles fill the gap?

usa.streetsblog.org

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Greg GRIFFIN @gregpgriffin.bsky.social · Aug 1

Such an evaluation in the US is needed! Here’s one from Germany that relies on some modeling: doi.org/10.1080/1538...

Quantifying Vision Zero: Crash avoidance in rural and motorway accident scenarios by combination of ACC, AEB, and LKS projected to German accident occurrence

Objective: The Vision Zero initiative pursues the goal of eliminating all traffic fatalities and severe injuries. Today’s advanced driver assistance systems (ADAS) are an important part of the stra...

doi.org

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Greg GRIFFIN @gregpgriffin.bsky.social · Aug 1

Case studies show what’s possible with action! apnews.com/article/hobo...

A New Jersey city that limited street parking hasn’t had a traffic death in 7 years

Hoboken, New Jersey, recently marked seven consecutive years without a traffic death. Officials there credit their decision to take away some street parking, a change that increases visibility for mot...

apnews.com

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Reposted by Greg GRIFFIN

Kate Lowe (she/hers) @kateontransport.bsky.social · Aug 1

Hi transportation Bluesky! Have you seen an analysis of some or all the cities that adopted Vision Zero and their injury/fatalities trends? I think I saw a news article about 2-4 years ago showing widespread failure towards VZ in those cities (except Hoboken). Don't remember enough to find it

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Greg GRIFFIN @gregpgriffin.bsky.social · Jul 28

🤩

Reposted by Greg GRIFFIN

Tara Goddard, PhD @drtaragoddard.com · Jul 14

Is there an term about AI writing equivalent to the uncanny valley? That is, the way that we as humans are sensitive enough to natural voice that even a polished and "well-written" AI piece gives a sense of its wrongness. I think of uncanny valley applying to images or video but maybe it is broader.

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Greg GRIFFIN @gregpgriffin.bsky.social · Jul 2

“Following the money“ to uncover root causes of public problems is tough. My cases from Austin, Texas and Banjul, Gambia provide examples combining qualitative & quantitative methods.

Speaking of money, @brisunipress.bsky.social offers 50% off right now: bristoluniversitypress.co.uk/transport-tr...

Book cover of “Transport Truths” by Greg Griffin, showing a narrow city street looking through rose-colored glasses.

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