We limit the speed of ebikes "for public safety", yet this study shows we'd need to limit SUVs to 5.7 km/h for them to pose the same risk to other people #motonormativity findingspress.org/article/1587...

At the end of the term I asked my college creative wriing students to submit anonymous thoughts on AI. No real surprises: Mood ranges from resignation to despair, capitulation from embittered erosion of standards to total, feelings of betrayal from deep to furious. 1/

🚨 New paper! 🚨 Does talking about transportation help local election candidates win? 🗳️ Analysing candidates for local office across the United States, I found that transportation issues could be used as a strategic electoral advantage in local elections. Read the article: doi.org/10.1177/1078...

Seattle's light rail & streetcar lines carried 4.8 million riders in April—a 44% increase above March, after Link Line 2 was extended to connect Seattle & Bellevue across Lake Washington. Seattle's light rail & streetcar lines are now the most-ridden in the nation, above LA, Boston, or San Diego.

I’ve taken the wheel from @shanedphillips.bsky.social on the Housing Voice podcast for the next four regular episodes to talk transportation! First up - how has cities responded to the state change in parking requirements around transit stops?

Super excited to hear about parking policy change in the PNW from Catie Gould. Tune in on May 7.

What happens when states take the lead on parking reform? Join @uclaits.bsky.social on May 7, with @citizen-cate.bsky.social on passing WA's SB 5184 and @amyelee.com on how CA's AB 2097 is playing out on the ground. Sign up at the link below!

The EPA is no longer going to consider how many potential lives a pollution regulation would save -- just the costs to industry. This is directly counter to EPA's mission. And it will kill Americans. Great (depressing) scoop from @maxinejoselow.bsky.social. www.nytimes.com/2026/01/12/c...

Why is advancing ambitious climate legislation hard even in “deep blue” states? Here’s a systematic study of 6 years of lobbying data and 8 years of testimony in a state that sees itself as a climate leader, but is struggling with implementation of its bold targets. Guess who are obstructing?

If you could snap your fingers and remove 10% of the vehicles causing traffic and clogging up the streets, would you do it? That power exists, and it's called congestion pricing.

Yet another evidence review argues very strongly that simply providing alternatives to driving doesn't reduce driving This isn't surprising, if only thanks to habit. If I unthinkingly jump in my car for every trip (as many do), new buses won't change that www.sciencedirect.com/science/arti...

Today on Volts: sustainable transportation policy is under comprehensive attack by the federal government, but states can soften the blow. Specifically, governors have a little-understood authority to transfer existing federal funds to EV charging, bike lanes, & transit. But time is running out!

tired: leaders throw folks under the bus wired: leaders invite folks on the bus in a dedicated lane

Seattle No Kings from the monorail

This book finally got published today - free for download here cssn.org/news-researc... A monumental effort documenting climate obstruction across sectors, countries & governance levels, by 110 @cssn.org scholars I was chuffed to contribute to one of the chapters (thread)

Happy centennial! It’s worth noting that originally this body, the first national traffic engineering institute, was funded 100% by one automobile manufacturer: Studebaker. It was named the Erskine Bureau after the company’s president. In 1935 the Automobile Manufacturers Association took it over.

The Jan 2025 LA fires showed how urban wildfires endanger transit riders and ppl w/o cars. 📊 Among transit riders surveyed: - 28% relied on rides from others - 21% used transit to evacuate - Black respondents were most likely to evacuate via transit (42%) www.its.ucla.edu/publication/...

Our multi-campus research team shared preliminary results from our work about the evacuation experiences of transit riders with LA county transportation and emergency management professionals yesterday! Can’t wait to release these findings publicly later this summer

Same street, two years apart. Rue Charles Moureu.

There are no distractions. It's all bad. Systematically stripping trans people of their rights, guys in balaclavas shoving any brown person with a tattoo into a ummarked vans, ending healthcare for millions. It's all in service of fascism and technofeudalism. It's all one thing. That's the point.

Study on London 20 mph limits shows: - collisions ⬇️ 35% - casualties ⬇️ 36% - fatal/serious injuries ⬇️ 34% - child casualties ⬇️ 46% - child deaths ⬇️ 75% - walkers, cyclists, motorcyclists killed/seriously injured ⬇️ 28% etsc.eu/20mph-limits...

So much is terrible these days but it's also jacaranda season in Los Angeles, which is beautiful from the ground and absolutely stunning from air.

"Women are PIs on 58% of the canceled grants, although they are PIs on only 34% of all active NSF grants. Similarly, Blacks are PIs on 17% of the terminated grants, although they make only 4% of the total pool. Hispanic PIs and those with disabilities were twice as likely to lose a grant."

As federal data infrastructure is gutted, we'll lose a window into the vast local health disparities. But those disparities will remain because place is an engine of health provision and stratification, not just an analytic vessel. New essay from me in UAR: journals.sagepub.com/doi/10.1177/...

🚨 Job alert: UCLA ITS is hiring a founding Staff Director for a new parking policy center! Work with top scholars, shape reform, and carry on the legacy of Donald Shoup. 🅿️ Learn more & apply by May 17: www.its.ucla.edu/202...

A colleague at Stanford’s business school used The Stanford Daily to argue—poorly—against DEI. The piece was riddled with historical errors and left one searching for fact, so I broke my public writing hiatus to respond. I hope you’ll read and share the piece. stanforddaily.com/2025/04/22/w...

Yes, the famously private freeway system and the famously private airport systems

Re-upping this, given news from the UK today, because it investigates what is and who decides the definition of "biological sex," which is anything but straightforward.

This seems like a good time to remind people that the Stanford Prison Experiment was based on fraudulent data. The "guards" were cruel to the prisoners because Zimbardo told them what he wanted to find with his research, and because they *wanted* to help him prove his point.

Just finished "Tested" and highly recommend. This theme, brought up about the 1936 Games in Nazi Germany, echos throughout: "Scholars of this period have argued that for sports officials, the point of all this concern…about fraudulent, incorrect women, wasn’t accuracy, or logic. It was control."

For “abundance” to improve transportation, supporters must consider the kinds of infrastructure that gets built – not just the quantity. Without addressing externalities (esp from cars), a supply-side spigot of new construction would be a disaster. Me, in Bloomberg CityLab 🧵

It’s book release month!! I’m so excited. Get your copy here: wwnorton.com/books/978132...

Unidentified men grabbing someone off the street and putting her in a car because she wrote an op-Ed. This as flatly authoritarian as anything we’ve seen in this country in a very long time.

Such a neat research idea & amazing findings: - Nighttime pedestrian deaths fall 5% on nights w/ peak moonlight - In cloud-free conditions, moonlight reduces pedestrian deaths by 17% - Rural areas with low artificial lighting see a 39% drop in deaths under bright moonlight - Links are causal

every college, corporate, and nonprofit president right now

University of California has banned diversity statements in the hiring process because "the requirement to submit a diversity statement may lead applicants to focus on an aspect of their candidacy that is outside their expertise or prior experience." By that logic, what about teaching statements?

As the Trump administration threatens to pull federal funds from universities, including those for medical and scientific research, the University of California has announced a hiring freeze and additional cuts.

In 2018 Musk won a bid for high-speed transit in Chicago. He tried to sell the city on technology that didn’t exist and his proposal was never built. He lied and showed little regard for public services. "We are now seeing the consequences of putting someone like that in a position of power." Blog:

Estimates suggest that the travel speed and emissions reductions benefits of congestion pricing were *greatest* in areas with the *lowest* median household incomes.

Just thinking about what the US looked like before the EPA existed

In a few recent interactions with transportation academics and policy folks, people have mentioned how “people prefer to drive” as a general reason for needing to increase investment in auto infrastructure. With that as motivation, let’s evaluate/audit your potential transit journey away from LAX.

The Trump admin is causing chaos in transport research. Studies have been canceled, datasets have vanished, and experts have been fired. The Nat'l Academies’ Transportation Research Board has caved to Trump’s demands for censorship, triggering upheaval. Its future is in doubt. From me (w/scoops) 🧵

Just in one year, just the clean air act, prevented hundreds of thousands of early deaths. The lowest possible estimate of the benefits found that benefits outweigh the costs by 3 to 1. The most likely estimate is 30 to 1. The high estimate is 90 to 1. Ninety. Nine Zero. www.epa.gov/clean-air-ac...

This is how it’s done.

I like how he looks back at the reality show star to see what to do next