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What a 160-year-old theory about coal predicts about our self-driving future

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What a 160-year-old theory about coal predicts about our self-driving future

Enticing though they are, such arguments conceal a logical flaw. As a classic 19th-century theory known as a Jevons paradox explains, even if autonomous vehicles eventually work perfectly — an enormous “if” — they are likely to increase total emissions and crash deaths, simply because people will use them so much.

20 comments
  • This is a fundamentally flawed argument.

    First of all, if people are getting to where they want to go faster, easier, and happier, that is a good thing. If you want to argue that everyone needs to be a hermit who never leaves home and orders everything on Amazon then you will never get your way because people fundamentally want to travel to see the outdoors and nature around them, to see their family and friends, and just to adventure. Eliminating vehicle deaths by making travel impossible is not a noble goal.

    Secondly, it's based on the idea that people even can drive more than they already do. Road congestion in most major cities is already the limiting factor that pushes people to bike, walk, or take transit. Even if AVs make it easier and cheaper to take car, you're still not going to do it during rush hour when you can bike.

    Thirdly, it's based on the idea that AVs are only going to be slightly safer than human drivers. We have no reason to think that's the case. Humans are fucking terrible drivers, and it's highly likely that AVs will be several orders of magnitude safer than the average human driver.

    Fourthly, it ignores other secondary effects to AVs, like suddenly not needing nearly as much parking, freeing up both parking lot real estate, but more importantly, freeing up on street parking, creating more room for actual traffic to move, and their increased patience not causing constant traffic jams because they tailgated someone and then slammed on the brakes.

    • Eliminating vehicle deaths by making travel impossible

      And here we see decades of automobile industry propaganda in action. There is only the car, or no mobility whatsoever. You remember how everybody was just trapped inside their houses for centuries until the Ford factories started cranking out Model Ts?

      Cars will never be a sustainable solution to mass transit. The immense amount of waste in materials, energy, and land use will not be offset with AVs. I don’t think AVs are a bad idea in and of themselves. But, as the article points out, they’re not going to solve any major problems.

      I had never really considered how induced demand would apply to AVs…

      • The argument against cars also holds that people should live in places where cars aren’t necessary to avoid hermitude in the first place. You don’t need cars to socialize if you can walk to where people are, you don’t need cars for supplies if you can walk to where stuff is.

        Long distance travel can have non-car solutions but also it shouldn’t be the default distance to be away from society.

      • And here we see decades of automobile industry propaganda in action. There is only the car, or no mobility whatsoever.

        Please cite where I said that.

        You remember how everybody was just trapped inside their houses for centuries until the Ford factories started cranking out Model Ts?

        Um, yes. Obviously not remember directly, but that is what is in history books.

        Most Americans lived in small rural communities and seldom left their farm and immediate community. When they travelled at all it would be by horse and buggy, and would take forever to get to the nearest train station, and then forever from the end of the line to wherever they had to go. If people lived farther away you would see them once every couple of years and otherwise letter write them. Cars fundamentally changed how much the average person travels in their life by huge orders of magnitude, and society is now oriented around individual families and communities being much more spread out. I think this is flawed, but I also think it's unlikely to change given the realities of basic things like housing costs making it unaffordable to live where your parents did.

        We should build out robust train networks to reduce as many cars as possible, but at the same time the idea that you'll eliminate cars completely is quite frankly, completely divorced from reality. I personally do not own a car and have spent a used car amount of money on a cargo bike to avoid having to buy a car. But guess what? There is still a very clear limit on the size of object I can transport (smaller than virtually any piece of furniture), it's unpleasant to infeasible to use in the rain depending on the load, and it is flat out unusable in the winter with snow and ice, so I end up using a car share service semi-regularly. I've thought about putting on bigger wheels, extending the bed, adding better suspension, a roof, and another set of wheels for balance, but now I've invented a car. And that's not to mention driving out to nature preserves for camping, hiking, rock climbing, mountain biking etc. nor visiting family and friends who live out in the country not near any bus stops or train stations.

        As long as cars exist, AVs will be better than human drivers, and literally no one has ever presented a remotely feasible and practical plan for eliminating cars.

    • Secondly, it’s based on the idea that people even can drive more than they already do.

      they can. induced demand is omnipresent in basically all vehicular infrastructure and vehicular improvements and there's no reason to think this would differ with autonomous vehicles

      Fourthly, it ignores other secondary effects to AVs, like suddenly not needing nearly as much parking, freeing up both parking lot real estate, but more importantly, freeing up on street parking, creating more room for actual traffic to move, and their increased patience not causing constant traffic jams because they tailgated someone and then slammed on the brakes.

      okay but: literally none of this follows from mass-adoption of autonomous vehicles. this is a logical leap you are making with no supporting evidence—there is, and i cannot stress this enough, no evidence that if mass-adoption occurs any of this will follow—and in general the technology is subject to far more fabulism and exaggeration (like this!) than legitimate technological advancement or improvement of society.

      • they can. induced demand is omnipresent in basically all vehicular infrastructure and vehicular improvements and there’s no reason to think this would differ with autonomous vehicles

        Yes, I have no doubt there would be induced demand, but that extra demand wouldn't be at the cost of anything. Induced demand is a problem when we, for instance, build new roads or widen existing ones, because then more people drive and they clog up the same as they were before. That's a bad thing because the cost of adding this capacity is that we have to tear down nature and existing city to add lanes, and then we have more capacity that sits at a standstill leading to more emissions.

        But if AVs add more capacity to our roads, that will be entirely because they are driving more efficiently. We'll have the same amount of cars on the road at any given time, they'll just be moving faster on average rather than idling in traffic jams made by humans. Which means that there will be only relatively minor emissions increases during peak times, fewer emissions emitted during non peak, and we won't be tearing anything down to build more giant highways.

        okay but: literally none of this follows from mass-adoption of autonomous vehicles. this is a logical leap you are making with no supporting evidence—there is, and i cannot stress this enough, no evidence that if mass-adoption occurs any of this will follow

        You're asking for something that does not exist. How am I supposed to provide you evidence proving what the results of mass adoption of AVs will be when there has never been a mass adoption of AVs.

        and in general the technology is subject to far more fabulism and exaggeration (like this!) than legitimate technological advancement or improvement of society.

        Again, it's never actually been rolled out on a mass scale. It's a technology still being actively developed. Neither of us know what the end results will be, but I put forth plausible reasoning to my speculation, if you have plausible reasoning why those things won't come to pass I'm all ears. For instance, what is your reasoning for believing that AVs could never be fundamentally safer than human drivers who are frequently tired, angry, distracted, impaired, impatient, etc?

  • I didn't know that I needed to know about Jevons' paradox. Such a simple but brilliant reasoning.

    You'll get less pollution and crash deaths if, instead of trying to improve cars, society improved transportation methods that compete with cars: walking, biking, public transport, so goes on. They either don't show those issues, or show them in a meaningfully lower level.

  • The extreme privilege and waste inherent in cars will never be healthy, sustainable, equitable, safe, etc.

    Ban cars.

  • Jevons didn't know that autonomous vehicles can work like a hive mind, today it's possible.

  • I’m more skeptical than most that self driving will be properly solved anytime in the next few decades, but I really doubt the article’s claims that it will be able to claim much modeshare from bikes and transit.

    Firstly, we already have and have had autonomous vehicles for nearly as long as we have had vehicles, their called taxis and carpools. Making these potentially cheaper, though in practice I doubt it since a taxi’s costs are spread over all its users while a car has to be paid by just you, does not change the fact that they are less convienent than being able to show up and hop on like a bus, or the immunity to traffic delays of rail. Indeed the proposed system of distant out of city parking lots would take more planning than just parking your own vehicle today in most places, as you have to call or order ahead with AVs to have them ready for instead of waking to your car and jumping in. Similarly, getting stuck in traffic does not get much more fun simply because someone else is driving, especially if you can’t even talk to them.

    The arguement for them replacing bikes is even worse, because one of the few things proper self driving vehicles are already pretty good at thanks to 360 ultrasonic and lidar sensors at is not blindly running down bikes, and a future with widespread adoption would also imply that most other vehicles have similar driver assistance tech, and as such more people will feel safe biking even in places with shit bike infrastructure. Meanwhile most people who were going to use a bike for a trip will not choose driving over bikeing just because they can get someone else to come pick them up.

    I could see it having an effect on modeshare in places with really shit and infrequent transit, but the whole point of rapid transit is that it is more rapid than taking a car. If your transit system is slower and worse than waiting ten minutes in the rain for an Uber, fix your terrible transit system, because that really should be a low bar to clear.

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