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Jonathan Hall

@jonathanhall.bsky.social

474 followers 140 following 17 posts

Associate Professor of Economics at the University of Alabama.

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Jonathan Hall @jonathanhall.bsky.social · 07/05/2025

P.S. Those in literature may like our summaries of the 56 papers we found. 12/12

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Jonathan Hall @jonathanhall.bsky.social · 07/05/2025

📚🔍To put these results in context, we then conducted a meta-analysis. We screened 2,597 papers, kept 56. Across modes & countries, lots of heterogeneity, but average estimates hover near zero; ~⅓ of papers find no significant effect (but boosts🚊and depresses 🚍). 7/12

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Jonathan Hall @jonathanhall.bsky.social · 07/05/2025

⚠️Traffic fatalities: noisy data give wide CI [‑30%, +199%]. We can’t rule much in or out. 6/12

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Jonathan Hall @jonathanhall.bsky.social · 07/05/2025

🚗Traffic congestion: point estimates slightly ↑ but never statistically significant; CI [‑6.1%, +20.7%]. No evidence that “Uber makes gridlock explode” 5/12

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Jonathan Hall @jonathanhall.bsky.social · 07/05/2025

We use a weighted average of US/CA cities to build a synthetic Vancouver that has Uber to estimate how ride-hailing impacts transit ridership, traffic congestion, and traffic fatalities. What do we find? 3/12

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