Pedestrian Deaths – David & Wes dig into a surprising shift in pedestrian safety and ask a harder question: are streets actually getting safer, or are we just seeing a temporary drop in risk? After years of rising fatalities, recent numbers suggest a modest improvement, but the pattern is anything but consistent. They explore whether this reflects real progress from design changes and enforcement, shifting travel behavior, or simply volatility in a system that still produces predictable danger. It’s a conversation about what it would actually look like if we knew how to make streets safer, and why the data do not quite tell that story yet.

Other topics: 🔹 The Secretary of Transportation’s road trip reality show 🔹 Gas prices & the resiliency value of transit 🔹 Should we be subsidizing ridehail commutes?

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Additional resources: GHSA’s Report on Pedestrian Traffic Fatalities by State: 2025 Preliminary Data (January-June)

Wes Marshall & Alejandro Henao. "The shock heard round the suburbs: Assessing the vulnerability, resilience, and transportation affordability of higher fuel price scenarios." Transportation Research Record (2015).

Rachael Bronson & Wes Marshall. "Alternative and adaptive transportation: What household factors support recovery from a drastic increase in gas price?." International Journal of Environmental Science & Technology (2014).

Lyft brings pre-tax commuter benefits deal to 14 more cities

Bruce Schaller. "Can sharing a ride make for less traffic? Evidence from Uber and Lyft and implications for cities." Transport Policy (2021).

Music by Charlie Van Stee (courtesy of bensound)

Email us at lookbothwayspod@gmail.com or find us at www.lookbothwayspodcast.com, www.davidzipper.com, and www.wesmarshall.org

Gas Prices – David & Wes dig into the upside of high gas prices and why the story is more nuanced than it often seems. While rising costs at the pump can create real challenges, they also explore how higher prices can make other modes more attractive, reinforce location efficiency, and shift how people think about transportation more broadly. It’s a conversation about how gas prices shape behavior, influence our transportation system, and what gets lost when we only talk about them as a political problem.

Other topics: 🔹 Our most harrowing driving experiences 🔹 How we mismeasure road safety 🔹 Indy cars on real Washington, DC streets 🔹 St. Patrick’s Day Rail Drinks

Additional resources:

Check out Chapter 23 (The Mirage of More Mileage) in Wes' Book:

& David's Recent Article: The US Is Counting Traffic Deaths Wrong

International Transport Forum Road Safety Annual Report 2025

‘Freedom revs’: Trump administration, DC mayor unveil details of Washington IndyCar race

Music by Charlie Van Stee (courtesy of bensound)

Email us at lookbothwayspod@gmail.com or find us at www.davidzipper.com and www.wesmarshall.org

Mailbag! – David & Wes take listener questions on any and all things transportation. Before doing so, they talk about why David is at the Northwestern Transportation Library. The answer? He’s writing a book about congestion pricing called The Price of Traffic.

Other topics include: 🔹 Sovereignty Implications of Cars 🔹 Bentley’s Law 🔹 Headlights 🔹 Insurance Companies Subsidizing Rural AVs 🔹 Our Favorite Intersections 🔹 Does Traffic Congestion Help or Hurt Safety? 🔹 BRT vs Subway 🔹 Value Capture Under- or Overused 🔹 Murder She Wrote (yup)

Music by Charlie Van Stee (courtesy of bensound)

Email us at lookbothwayspod@gmail.com or find us at www.davidzipper.com and www.wesmarshall.org

Florida Men – David & Wes venture down to Fort Lauderdale for the 2026 Safe Roads Summit. After their respective talks, they jump on stage to record a live podcast episode with Broward MPO Executive Director, Greg Stuart.

Topics include: 🔹 The Brightline Train Destroying a Delivery Robot 🔹 The Long History of Unsafe Streets in Florida 🔹 Managed Lanes Moving from Nonstarter to Normal

Additional resources:

Delivery robot demolished by train in South Florida

Dangerous By Design Report by Smart Growth America

Find out more about Greg Stuart

And the Safe Roads Summit

Music by Charlie Van Stee (courtesy of bensound)

Email us at lookbothwayspod@gmail.com or find us at www.davidzipper.com and www.wesmarshall.org

Rural AVs – David & Wes take a deep dive into the future of rural transportation and why mobility challenges outside our cities deserve far more attention. From David’s experience trying to get around West Virginia to Wes’ take on “rural urbanism” and the awesomeness of some rural Main Streets, they explore what rural villages get right, where and why rural areas struggle, and how autonomous vehicles might help the cause even more so than in urban areas.

Other topics:

🔹 Iowa’s Anti-Bike Bill 🔹 Rural Transportation 🔹 The 2026 Safe Roads Summit

Additional resources: 'The most anti-biking bill in history' — Iowa’s near-total bike ban proposal is bizarre and alarming

New Jersey Passes Most Restrictive E-Bike Law in the U.S.

Some Florida lawmakers look to strengthen e-bike laws

Disturbing Utah ‘Bikelash’ Bill Takes Aim at Salt Lake City Traffic Calming

David’s related articles: AV companies are ignoring rural America. That's a shame.

The Town That Took Downtown Renewal to the Next Level

Wes’ related research: Assessing urban/rural road safety disparities in the US

Music by Charlie Van Stee (courtesy of bensound)

Email us at lookbothwayspod@gmail.com or find us at www.davidzipper.com and www.wesmarshall.org

Parking Meters – David & Wes unpack the recent multi-billion-dollar resale of Chicago’s parking meter lease and why it matters. They explain the contract, including the compensation clause, and how it continues to hamstring Chicago’s ability to improve transportation. They also explore the less-discussed reality that some good has come from the deal such as a city that actually charges market rates for curbside parking. Then, borrowing a lesson from Taylor Swift, they explore how Chicago could someday afford to buy back their meters.

Other topics: 🔹 Amtrak quiet cars… and maybe some party cars? 🔹 The future of useful transit 🔹 Trump’s love for mini-cars (he may be right)

Stay tuned for biweekly conversations about all things transportation.

Additional resources: Chicago parking meter deal: City's meters sold to another private company, Mayor Johnson says

Henry Grabar’s Paved Paradise: How Parking Explains the World

RTD’s CEO says charging for parking, focusing on events could help transit recover

And David’s Mini-Car Stories... Tiny Cars, Big Opportunity

What Do US Vehicle Regulators Have Against Tiny Cars?

Music by Charlie Van Stee (courtesy of bensound)

Email us at lookbothwayspod@gmail.com or find us at www.davidzipper.com and www.wesmarshall.org

AV Safety – David & Wes explain why an online kerfuffle about autonomous vehicle safety unexpectedly put David himself in the spotlight. They unpack why autonomous vehicle debates so often generate more noise than insight, how narratives take on a life of their own, and what cities should be paying attention to right now. Listeners will come away with a clear sense of where autonomous vehicles truly stand and why context, logic, and governance matter more than bold promises.

Other topics: 🔹 The quick start to the Mamdani era in NYC 🔹 Listener questions & what mode of transportation would win Survivor 🔹 A rehash of our first ever in-person Rail Drinks in DC

Stay tuned for biweekly conversations about all things transportation.

Additional resources: Officials showed off a robo-bus in D.C. It got hit by a Tesla driver

NCHRP Project 17-97: “Strategies to Improve Pedestrian Safety at Night”

David’s Original Stories… Bloomberg: We Still Don’t Know if Robotaxis Are Safer Than Human Drivers

Financial Times: Europe doesn’t need driverless cars

And the back-and-forth... Why David Zipper is Wrong

Why David Zipper is Right (by Peter Norton)

NYC doing things… Mamdani Takes the Bite Out of ‘the Bump,’ Paving Over Hated Road Hazard

Mayor Mamdani Announces City to Complete Redesign on McGuinness Boulevard

Fast Buses: Mamdani Administration Moves Forward With Stalled Madison Avenue Bus Lane Project

Music by Charlie Van Stee (courtesy of bensound)

Email us at lookbothwayspod@gmail.com or find us at www.davidzipper.com and www.wesmarshall.org

Robotaxi Meltdown – David & Wes discuss how robotaxis affect urban resilience after a blackout brought mayhem to San Francisco’s streets. As robotaxis expand in cities across the United States and Europe, how will they react to emergencies and unforeseen events? If autonomous vehicles freeze en masse, transportation networks could grind to a halt.

Other topics: 🔹 The quiet power of city sidewalks 🔹 Best ways to keep biking in the winter 🔹 The uncertain future of transportation & urban planning research under Trump

Stay tuned for biweekly conversations about all things transportation.

Additional resources:

Info about the Waymo meltdown during the San Francisco blackout

David’s recent Bloomberg article questioning whether AVs really are safer than humans

Wes' paper with Peyton Gibson on the disparate approaches cities take to maintaining roads and sidewalks

Wes' paper with Nick Coppola about municipal policy impacts sidewalk availability & width

Wes' paper with Nick Coppola about how much static obstructions affect the clear width of sidewalks

David’s 2025 article in Bloomberg about Denver’s innovative sidewalk program

Crossroads, the “TRB alternative” taking place in DC Jan 15

David’s 2025 article about transportation research censorship under Trump

Music by Charlie Van Stee (courtesy of bensound)

Email us at lookbothwayspod@gmail.com or find us at www.davidzipper.com and www.wesmarshall.org