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davidzipper, to Dallas
@davidzipper@mastodon.social avatar

This is the best series on road safety Iโ€™ve ever seen.

Last week Dallas's NBC 5 ran a five-part investigation into the city's epidemic of car crashes.

Rather than blame drivers, the story delves into speed, street design, state preemption, and Vision Zero's failures.

https://www.nbcdfw.com/investigations/driven-to-death-dallas-traffic-death-rate-worst-among-10-largest-u-s-cities/3373511/

davidzipper,
@davidzipper@mastodon.social avatar

I traveled to Dallas to help put this story together.

As I told the reporters, โ€œAt some point you have to make a choice of whether it's more important to save lives, or to facilitate fast car traffic.โ€

davidzipper, to cars
@davidzipper@mastodon.social avatar

Colorado is considering a weight-base car fee to address car bloat:

๐Ÿ”น Fee would would apply to cars >3,500 lbs, up to $29.90/yr (should be higher, but it's a start)

๐Ÿ”น $$ collected would fund bike lanes, road diets, automatic cameras, etc

๐Ÿ”น Only collected in the 12 most populous counties

@colorado

https://www.cpr.org/2023/09/29/colorado-pedestrian-safety-suv-truck-owners/

davidzipper,
@davidzipper@mastodon.social avatar

The District of Columbia already has weight-based car fees, requiring owners of the biggest cars and trucks (6,000 lbs+) to pay hundreds of $$ per year.

That's a much stronger policy than what Colorado is proposing.

https://www.bloomberg.com/news/articles/2022-05-26/a-new-way-to-curb-the-rise-of-oversized-pickups-and-suvs

davidzipper, to SanFrancisco
@davidzipper@mastodon.social avatar

In The Atlantic, I explained why I welcome the uproar over robotaxis in California.

Even if self-driving cars work flawlessly (which definitely isn't the case now), they could be a calamity for cities and the planet.

We should think long and hard before letting them scale.

THREAD

#AVs #sanfrancisco #transportation #cities

https://www.theatlantic.com/ideas/archive/2023/08/robotaxis-san-francisco-self-driving-car/674956/

davidzipper,
@davidzipper@mastodon.social avatar

Context:

A few hundred robotaxis from Cruise and Waymo now ply SanFrancisco streets, providing trips akin to driverless Ubers.

Robotaxis remain a work in progress: Theyโ€™ve run over firehoses, entered construction zones, delayed transit, and (frequently) blocked traffic.

Source: https://t.co/rHiwDGEyPp

davidzipper,
@davidzipper@mastodon.social avatar

Despite myriad problems, Waymo/Cruise are asking the five members of the California Public Utilities Commission (one of whom is ex-Cruise) to let them operate unlimited robotaxis 24/7, citywide.

San Francisco public safety and transportation officials are adamantly opposed, as are grassroots activists who are freezing robotaxis with taxi cones.

https://abc7.com/san-francisco-driverless-car-cones-sf-robotaxi-waymo-cruise/13478843/

davidzipper,
@davidzipper@mastodon.social avatar

Much of the debate inCalifornia has revolved around robotaxi tech (which will improve) and safety impacts (which are unknown).

But bigger questions are atstake. Consider Cruiseโ€™s internal goal of deploying 1 million robotaxis by2032. How would that affect urban life?

davidzipper,
@davidzipper@mastodon.social avatar

We should recall what happened a century ago, when cars arrived en masse.

US streets were redesigned for vehicle speed. Pedestrian deaths skyrocketed, sidewalks were ripped up, jaywalking was invented, and transit service collapsed.

We still suffer from those decisions.

davidzipper,
@davidzipper@mastodon.social avatar

If self-driving tech works, it could bring equally far-reaching changes.

Researchers gave test subjects full-time chauffeurs, mimicking robotaxi access. Driving skyrocketed 80%+. (Source: https://t.co/D42ZF4CGbO)

At scale, that suggests a huge spike in urban congestion & sprawl.

It gets worse. As self-driving cars induce more driving, they would accelerate emissions (even if cars are electric).

Info: https://t.co/MID1jvkI63

davidzipper,
@davidzipper@mastodon.social avatar

Itโ€™s possible -- though not at all certain โ€“ that a city full of robotaxis would be safer.

But if thatโ€™s the goal, why not weigh robotaxis against other (cheaper, more reliable) tactics to improve road safety, like building slower streets?

t.co/RlgbkukC6T

davidzipper,
@davidzipper@mastodon.social avatar

Before robotaxis are allowed to scale, we should carefully consider whether and how they fit within dynamic cities.

Perhaps these vehicles are a net plus in a sprawled, autocentric region like Phoenix, but not in a dense, multimodal city like San Francisco.

davidzipper,
@davidzipper@mastodon.social avatar

What we should not do is open the barn door for an emergent technology whose potential downsides -- especially for cities -- are immense.

We did that a century ago. Letโ€™s be smarter this time.

t.co/Fn3AMn0i0U

davidzipper, to cars
@davidzipper@mastodon.social avatar

Iโ€™ve spent much of this year examining car bloat, the process through which smaller vehicles are being replaced by increasingly massive SUVs and trucks.

What Iโ€™ve learned: Huge cars are terrible for society, often in ways that are hidden.

Some basic facts:
โ—† >80% of US car sales are now trucks/SUVs.
โ—† Models keep expanding. For example, the F-150 is now ~800 lbs heavier and 7 inches taller than in 1991.
โ—† EVs can make the problem worse due to huge batteries.

Continued (THREAD)

#cars #climate

davidzipper,
@davidzipper@mastodon.social avatar

Problem 4๏ธโƒฃ : Car bloat destroys roadways

Cars have become so heavy that US autohaulers canโ€™t carry a full load w/o exceeding federal weight limits.

Car companies and truckers are asking Congress to raise those limits โ€“ but doing so would pulverize asphalt.

https://t.co/b1qFaTElbS

davidzipper,
@davidzipper@mastodon.social avatar

Problem 5๏ธโƒฃ : Car bloat makes cars expensive

Big, heavy cars can be sold for more $. Thatโ€™s why Stellantis CEO Sergio Marchionne made a famous pivot away from sedans in 2016, a move other carmakers followed.

Itโ€™s a key reason cars have become so pricey.

davidzipper,
@davidzipper@mastodon.social avatar

Even some automakers are recognizing the dangers of car bloat and calling for change.

Here is Stellantis' CTO in a recent interview.

https://t.co/4kA8qqYciQ

davidzipper,
@davidzipper@mastodon.social avatar

Some might say: โ€œBut people want big cars!โ€

Not necessarily. US automakers offer no alternative, and car bloat pushes buyers to upsize โ€“ if only to avoid being at a disadvantage on the road b/c others have big cars.

https://slate.com/business/2022/11/suv-size-truck-bloat-pedestrian-deaths.html

davidzipper,
@davidzipper@mastodon.social avatar

Summary: Car bloat is terrible โ€“ for road safety, for the planet, for equity, and for road maintenance.

But bigger cars are often more profitable, so automakers like making them.

The only way out: Government action. Examples:
๐Ÿ”น Tax vehicles by weight.
๐Ÿ”น Test vehicles for pedestrian and cyclist safety (still doesnโ€™t happen in the US).
๐Ÿ”น Require a CDL for the most gigantic vehicles.

Left alone, this problem will only worsen. Governments must step up.

https://slate.com/business/2023/01/electric-cars-hummer-ev-tax-fees-weight-joe-biden.html

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