Greg Erhardt

It’s all good. We’ll find a time to connect and I’ll keep my eye out for you around Lexington.

Today, I am judging at the Kentucky High School State Debate Tournament. These kids are awesome!

2) If you’re looking for a new job, I am happy to talk through opportunities, options, and who else to talk with. I already do this with my students and enjoy connecting with those thinking through transitions.

Please reach out, even if we’ve never met.

My heart goes out to those affected by federal layoffs. If you’re in transportation:

1) I am recruiting funded graduate students, which is ideal for someone who wants to take a pause to articulate their vision of how to build a better transportation system.

Abstracts are due Feb 14 for Modeling Mobility 2025. See modelingmobility.org

Are they? In KY, the rate of 18-year olds going to college is declining. Although I suppose the drop in migration rates predates that trend.

Apparently the 2019 TIGER line files are a threat to the American way? Be sure to download any Census files you can.

Everyone concerned about data loss right now should learn about the End of Term Web Archive, which I believe has been working on preserving federal websites for the past 8 months. The dataset you fear has been lost may well be here

Just an incredible project. Thank you to everyone involved

This is the best explanation around of the Trump Admin “funding freeze” state of play, particularly with respect to EPA funding.

To see an enthusiastic face, check out the video of me meeting @govandybeshear.bsky.social at the 100th Anniversary of KY state parks!
www.instagram.com/reel/DFTuA2X...

Transport planning is an inherently optimistic task--imagining the world as it could be, as we want it to be. How do we continue this optimism as the world feels like its swirling? Professor Lyons grapples with this question, and argues that we must.

Network Wrangler and Cube Networks: Cube Network Wrangler Users,

We are currently exploring how Network Wrangler is being used to code projects into Cube networks and are eager to learn from others’ experiences.

Would it be too much to ask if someone might be willing to walk us through… #tmip

I agree that it’s a different list, but I would also love to see what folks think are the “essentials” or maybe the classics that we should all read.

Prototypical Papers in Transportation: Dear TMIP Friends,

I'm compiling a list of prototypical papers in transportation research intended as models for graduate students to follow when structuring and writing papers of different types. The focus is not necessarily on the impact of the… #tmip

Prototypical Papers in Transportation

I'm compiling a list of prototypical papers in transportation research for graduate students to emulate. The focus is not on the impact of the science (though that is welcome), but on the clarity of the writing, figures, and presentations. Please add suggestions.
docs.google.com/spreadsheets...

this is incredible stuff. most state DOTs would spend tens of billions on highway expansions to try and see numbers like this (that wouldn’t even pan out anyway thanks to induced demand lol)

It’s too early to draw concrete conclusions, but initial data from @mta.info and partners show that Congestion Pricing is working in NYC!

River crossing into the zone 30-40% faster inbound and any transit using the crossings were sped up dramatically.

The ten rules for good model-sharing practices

“Ten Simple Rules for Good Model-sharing Practices” is the result of an enormous multidisciplinary collaboration across three continents.

Some personal reflections about getting the paper together 👇

journals.plos.org/ploscompbiol...

Induced demand applies to parking, too:

"An increase in parking provision from 0.1 to 0.5 parking space per person was associated with an increase in automobile mode share of roughly 30 percentage points."

Paper by @riocobre.bsky.social, @chrismccahill.bsky.social et al.

doi.org/10.3141/2543...

Short story: Both should align with the outcomes of projects we've built in the past. So establish those benchmarks and compare, making sure it is an apples-to-apples comparison. If they are different, you have two choices: 1) make the model better, or 2) apply an adjustment factor.

USDOT recently issued best practices for travel demand modeling. Among others, they include: 1) account for historical accuracy and 2) account for national studies (including induced demand).
dot-climate-strategies.my.canva.site/improved-tra...

New study provides further evidence that when it comes to travel, what people think is less important than their environment www.sciencedirect.com/science/arti... This nicely agrees with the Reverse Causality Hypothesis (www.sciencedirect.com/science/arti...) which says attitudes FOLLOW behaviour

@transportist.net has a starter pack of transportation researchers pinned to his page. You can start from there.

A new starter pack: go.bsky.app/LaeKYA2 . Let me know who else belongs in the comments.

Excited to join Bluesky! Post mostly about transportation—data, models, analysis, and applications to planning and policy. Proud Kentuckian, with stops in IND, ITH, ORD, DEN, SFO, LHR, and MUC. Dad, Ultimate Frisbee player, BBN fan, bourbon drinker, HS debate judge, and more. Who should I follow?