Jeffrey Tumlin πŸ³οΈβ€πŸŒˆ 🌁's Avatar

Jeffrey Tumlin πŸ³οΈβ€πŸŒˆ 🌁

@jeffreytumlin

Transport nerd. Recovering city bureaucrat. Introvert. Working to cut COβ‚‚, eliminate traffic violence, advance equity, and strengthen local economies. Former SFMTA, OakDOT, Nelson/Nygaard. SF.

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Latest posts by Jeffrey Tumlin πŸ³οΈβ€πŸŒˆ 🌁 @jeffreytumlin

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How electrifying a Bay Area rail system made trains faster, cleaner, and more frequent A $2.4 billion upgrade to Caltrain is shaving time off trips, boosting ridership, and reducing riders’ exposure to toxic diesel pollution.

How electrifying a Bay Area rail system made trains faster, cleaner, and more frequent | grist.org/transportati....

05.03.2026 18:37 πŸ‘ 107 πŸ” 28 πŸ’¬ 3 πŸ“Œ 10

My most embarrassing celebrity moment:
Convention center men's room.
Jim Henson walks up to adjacent urinal.
I'm paralyzed.
My studied coolness fails me.
I stupidly open my mouth and say:
"Mr Henson, thank you for teaching me the alphabet."
My mouth's betrayal is met by simple nod and wink

06.03.2026 04:35 πŸ‘ 11 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0

With thoughtful regulation we could accelerate upside of AV tech while upholding public good, promoting competition, and supporting public trust. I hope states do the work to define public good with key performance metrics and tie scaling to performance

06.03.2026 02:21 πŸ‘ 8 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Location maps.app.goo.gl/uKHBDCV81z42...

06.03.2026 02:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Waymo is now blocking the only eastbound through lane on Townsend, a key SF arterial. AVs have a scaling problem in cities. This isn't just inconvenience but a loss of network capacity. Waymo cuts SF's ability to move people and goods in its streets. User convenience β‰  system efficiency

06.03.2026 02:16 πŸ‘ 44 πŸ” 8 πŸ’¬ 3 πŸ“Œ 2
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I'm accepting that today was not a writing failure but rather a time to prune the climbing roses to process a chapter I've been avoiding

06.03.2026 01:36 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
The Empty Bus Lane Myth
The Empty Bus Lane Myth YouTube video by TransLink

TransLink in Vancouver have such a great comms team working with their bus priority program. I love thid busting the myth of the empty bus lane 🚍 www.youtube.com/watch?v=r9gj...

25.07.2025 17:00 πŸ‘ 5 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
Kermit the Frog Sing Along | Rainbow Connection | The Muppets
Kermit the Frog Sing Along | Rainbow Connection | The Muppets YouTube video by The Muppets

I was 10, and saved money from babysitting and mowing neighbors' yards so I could buy my first vinyl. I have no regrets.
youtu.be/awhyiBv-oQc?...

06.03.2026 00:57 πŸ‘ 507 πŸ” 50 πŸ’¬ 30 πŸ“Œ 4

Bus lanes eliminate congestion delay. Make sure you're calculating and addressing boarding and signal delay too. Replace LOS and vehicle-delay metrics with person delay. Because our job is moving people and goods, right?

06.03.2026 00:37 πŸ‘ 9 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Removing transit from congestion dramatically expands career-ladder jobs accessible in 30-min commute from disinvested neighborhoods. When planning busways, measure expanded jobs access in future-proof NAICS codes

06.03.2026 00:33 πŸ‘ 11 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Urban busways quietly manufacture land value, because they dramatically expand the person-capacity of city streets. Cities can move 10x more people per hour in a busway, expanding employers' talent pool and thus attracting investment. The math is simple

06.03.2026 00:27 πŸ‘ 12 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Putting busways on existing streets are among most cost effective projects. 20% speed improvement = 20% ops savings or 20% frequency improvement at no ops cost. They're like printing cash

05.03.2026 23:21 πŸ‘ 68 πŸ” 19 πŸ’¬ 1 πŸ“Œ 0

Considering new drag name:
Sister Sludge Cake

05.03.2026 19:12 πŸ‘ 9 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Don't let them destroy your social trust. Resistance means actively fostering social trust every day. Mend the torn fabric

05.03.2026 17:27 πŸ‘ 10 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Your periodic reminder that you need a staff that matches the diversity of your constituents. And you need to listen to your staff

05.03.2026 01:48 πŸ‘ 7 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
The front of a Waymo that tried to pass a fucking bus on a basically one way hill because we can’t teach a robot about right of way in a SOCIETY

The front of a Waymo that tried to pass a fucking bus on a basically one way hill because we can’t teach a robot about right of way in a SOCIETY

hey so my 35 is completely blocked by a GODDAMN ROBOT

05.03.2026 00:49 πŸ‘ 11 πŸ” 2 πŸ’¬ 2 πŸ“Œ 1
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A failed Waymo robot blocking emergency response to last night's mass shooting was driven out of the way by Austin police:

500 block of Nueces St

0:30 APD officer appears to arrange takeover w Waymo telops.

The shooting was around the corner ~block and a half (~600 ft) away.

OP: tiktok.mturnage5

01.03.2026 16:37 πŸ‘ 16 πŸ” 6 πŸ’¬ 1 πŸ“Œ 7
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Nobody has the right to put millions of other people in danger. Yet that’s exactly what these drivers are doing on a near-daily basis β€” the top 10 super speeders in New York were caught by school zone speed cameras an average of 179 times each, at least once every other day.

04.03.2026 17:15 πŸ‘ 22 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0
Punjabi Bite Explore our menu of Indian Food, Breakfast and Drinks online or stop by our Dhaba on wheels in person. Punjabi Bite based in Barstow, CA. I-15 Exit 178.

It also means there's better food available in Barstow than ever before, at least if you search for Punjabi food hidden away in a logistics hub, because long-haul Sikh truckers demand the best. Highly recommended: punjabibite.cloveronline.com
4/4

04.03.2026 01:21 πŸ‘ 9 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Crossing Calif's high desert on the main highways means passing Amazon Prime trucks and double-stack container trains carrying Chinese manufactured products and Calif ag to consumers across North America
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04.03.2026 01:12 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Why Barstow International Gateway is a BIG deal Transportation has long been part of the story of Barstow, California, located in the southern portion of the state in the Mojave Desert. Barstow’s role in transportation is about to get really BIG – ...

I'm currently distracting myself from writing by reading about Bartow's future logistics strategies
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www.bnsf.com/news-media/r...

04.03.2026 01:05 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Memorial trip postscript. Mile-long BNSF and UP freight trains and the West's biggest truck traffic cross through Barstow in the high desert, connecting Port of LA and Central Valley to Salt Lake, Chicago and Texas. Barstow's logistics awed my 8-year-old self
1/

04.03.2026 01:02 πŸ‘ 6 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

This is skillful resistance

04.03.2026 00:03 πŸ‘ 8 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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BDSM - Buses Do So Much (for the environment) T-Shirt 2025 β€” Streets For All Show your pride for the dominance of public transportation. 🚦All proceeds support Streets For All's advocacy mission for safer streets and better transit.🚦 β€’ 100% ring-spun cotton β€’ Garment-dyed β€’ R...

Obviously I need this in my transit nerdwear collection along with my @streetsforall.org Buses Do So Much tee
www.streetsforall.org/merch/bdsm-b...

03.03.2026 23:38 πŸ‘ 8 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

While you wait for LA Metro to restock, you can get your Ride the D tee from Derek. Because you know you need some D right now

03.03.2026 23:35 πŸ‘ 9 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Here in SF we may hate the Dodgers but we're all competing to get an LA Metro RIDE THE D teeshirt because we love transit

03.03.2026 22:52 πŸ‘ 49 πŸ” 5 πŸ’¬ 4 πŸ“Œ 1
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Adding Up What Urban Highways Really Cost A new report maps the economic toll that downtown freeways exact on 142 US cities β€” and tallies up what that land could be worth if it was developed for other uses.

Another link to the Bloomberg Story on the Atlas of Inner City Highway Impacts: www.bloomberg.com/news/article...

03.03.2026 18:50 πŸ‘ 33 πŸ” 15 πŸ’¬ 6 πŸ“Œ 4

I'm now as fascinated by air traffic trackers as I was by tanker trackers when the Ever Given blocked the Suez canal in 2021
See www.flightradar24.com

03.03.2026 20:34 πŸ‘ 8 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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I’ve been riding Muni, BART & Caltrain since 1997. Transit is San Francisco’s backbone. We must never take these systems for granted & I’ve fought hard to fund them & make them better.

I’ll continue that fight in Congress.

www.scottwiener.com/platform

03.03.2026 19:45 πŸ‘ 58 πŸ” 9 πŸ’¬ 0 πŸ“Œ 1
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Improvements for Our Riders Pay Off: Muni Receives Highest-Ever Customer Satisfaction Ratings

Non-paywalled details here
www.sfmta.com/blog/improve...

03.03.2026 19:43 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0