Self-driving cars promise a 'revolution,' but not necessarily a positive one

February 22, 2016 by Troy Wolverton, San Jose Mercury News
The finalized prototype of Google self-driving car.

With self-driving car technology rapidly advancing and such vehicles already driving on city streets, the time is ripe to start talking about how they might change more than just how we get around.

Self-driving cars won't just be cool technological gadgets. They are also likely to spur profound changes to the economy and society.

The move to "literally is a revolution," said Raj Rajkumar, a professor of electrical and computer engineering at Carnegie Mellon University who co-directs a lab there dedicated to research.

How that revolution will play out will depend a lot on the public and policymakers thinking through the consequences of self-driving cars and putting in place rules that will steer them to the best outcomes.

"It's not going to be all positive," said Shannon Sanders McDonald, a professor of architecture at Southern Illinois University who has studied the potential impacts of self-driving cars. "If we understand (the drawbacks), we can design for them so their impact is not so negative."

Perhaps the most immediate effect of autonomous car technologies will likely be a dramatic reduction in accidents. More than 90 percent of all traffic accidents in the United States can be chalked up to driver error, according to the National Highway Traffic Safety Administration. Although manufacturers are still perfecting the technology, self-driving cars are expected to be much, much safer than human drivers. They aren't prone to distraction like their human counterparts. And they can use sophisticated sensors to get a much more complete real-time view of their surroundings.

Even so-called semiautonomous vehicle technologies, which are already showing up in cars today and only take over certain functions such as braking or lane keeping, have the potential to reduce accidents and save lives.

The savings that could be gained in terms of lives and money lost to accidents is "pretty tremendous, even with just some of these (automated) technologies on board," said Kara Kockelman, a professor of transportation engineering at the University of Texas at Austin.

Another near-term benefit of self-driving cars could be less congestion and smoother traffic flow. Thanks to their sensors and quick reaction times, automated cars will potentially be able to drive closer together than human-piloted cars, experts say. That would allow more of them on the road at one time. Because they would be less likely to get in accidents or to overreact to other cars changing lanes or slowing down, they'd be much less likely to cause traffic snarls.

The ability of self-driving cars to navigate traffic on their own could have ancillary benefits. Because they are less likely to get in accidents, they could be made lighter, making them more fuel efficient. Less congestion could lead to less pollution and greenhouse gas emissions. Handing the keys over to the robot driver could allow riders to work while stuck in traffic or simply relax.

Self-driving cars could "reduce the costs of congestion," said James Anderson a senior behavioral scientist at think tank RAND who has studied the potential impacts of autonomous vehicles.

Companies such as Uber are discussing the idea of putting together fleets of self-driving cars that would act like personalized for particular areas. Such systems could be huge boons for the millions of Americans who can't drive due to age or disabilities and to those who can't afford their own car. Those citizens tend to rely on transit systems that often don't do a good job of connecting poorer citizens with areas that have jobs or offering timely transportation to those in need.

That kind of personalized transit system could also persuade many consumers that it no longer makes sense to own a car. They could offer many of the benefits of car ownership - such as the ability to go directly from one point to another on a user's own schedule - without all of the burdensome costs, such as car payments, insurance, fuel, parking and maintenance.

Regardless of whether we each have our own self-driving car or we just hire them from Uber as needed, the vehicles could have a big effect on land use. Right now, we devote vast tracks of land to parking, much of it in highly valuable areas near where we work or shop. But if cars can park themselves, they don't necessarily need to be parked nearby. And if they're in constant use, because they're part of a fleet, they may need to be parked only rarely.

Those factors could allow cities to repurpose space now devoted to parking lots, residential garages and street spaces for more housing, bike lanes or even parks.

"You could suddenly free up incredibly valuable real estate in some of the densest cities in the world," said Anderson.

But the move to autonomous vehicles will also have drawbacks. The reduction in accidents alone - while a positive thing for society as a whole - will likely levy a huge blow to the industries and jobs that are tied to dealing with their consequences, whether car body shops or automobile insurance companies or even hospital emergency rooms. Self-driving cars are also likely to lead to widespread job losses among people who drive for a living, whether the vehicles they pilot are cabs, trucks or buses.

"The operators of these vehicles and those who repair them have to be on notice," said Kockelman.

Meanwhile there could be unintended consequences of self-driving cars that undermine some of their potential benefits. Because they're likely to make congestion less burdensome, self-driving cars may actually encourage more people to drive to work, paradoxically leading to more pollution and congestion. Similarly, they could encourage more people to take long driving trips for vacations figuring they can sleep or relax while their RV or SUV worries about the road.

And should people continue to own their own cars, the move to self-driving ones could encourage owners, after they've been dropped off at work, to have their cars drive around in circles waiting for them or to send them home to park.

"You could end up with more congestion under reasonable assumptions," said Anderson.

These types of consequences are what makes it important to study how self-driving cars could affect society before they hit the street en masse.

"My god, we've got to understand what's happening," said McDonald. "Because there are many challenges and equally as many solutions."

Explore further: US government developing policies for self-driving cars

Related Stories

Kia sees autonomous cars by 2030

January 6, 2016

South Korean automaker Kia said it envisions introducing an autonomous car using its own technology by 2030 under a new initiative dubbed "drive wise."

Recommended for you

Enhancing solar power with diatoms

October 20, 2017

Diatoms, a kind of algae that reproduces prodigiously, have been called "the jewels of the sea" for their ability to manipulate light. Now, researchers hope to harness that property to boost solar technology.

4 comments

Adjust slider to filter visible comments by rank

Display comments: newest first

greenonions
5 / 5 (1) Feb 22, 2016
Great article - very thoughtful. It seems the big down side of many new technologies, is the reduction in jobs. We have to start a meaningful transition to a world where work is not what defines us. As this article seems to suggest - it will be a better world - if we are thoughtful about the changes we make.
antialias_physorg
5 / 5 (2) Feb 22, 2016
Perhaps the most immediate effect of autonomous car technologies will likely be a dramatic reduction in accidents.

Before that the most immediate effect will be a quarter increase in drunk people (no more designated drivers)
(just kidding)

They could offer many of the benefits of car ownership - such as the ability to go directly from one point to another on a user's own schedule

Depends. If your schedule coincides with everyone else's (e.g. commute to work) then owning one would be preferrable. It would not be guaranteed that you get one when you need it, otherwise.
But especially for old (or handicapped) people autonomous cars would add a huge amount of mobility. Especially in areas where other forms of mass transit are underdeveloped or not available at all.
jwilcos
not rated yet Feb 22, 2016
There will be even more significant changes.

- Because commute time becomes less important, urban sprawl will increase as people choose to live in far flung areas and commute. Because commute time can be used productively, to do work or watch tv or eat or whatever you would be doing at home.
- Car ownership will be eliminated. Why own a car which is sitting there doing nothing 22 out of 24 hrs? There will be large networks of cars that can pick you up from anywhere within 5-10 min and take you wherever.
- Cars will become more and more like mini-homes. TVs, fridge, couches etc. would be routine.
- People will use cars be subscribing to 'plans' similar to current phone plans. There will be simple basic car network (similar to budget hotels) to fancy expensive cars (like luxury hotels). Plans can also differ by milage - e.g., you can get 1000 miles/year plan or 2000 m/year plan or unlimited plan, depending on how much you drive.
continued....
jwilcos
not rated yet Feb 22, 2016
- You will not be saving any money. Current car payments will be transformed to car plan payments.
- It will not make sense to own a car, because they will be much more expensive due to being mini-houses. So most everyone will be subscribing to one plan or the other.
- Except those who realize that they don't have to live in a fixed house at all. Car will become their home, and they will eschew traditional home ownership/rental. Just like a trailer, except much more fancy, and not associated with low economic class. There will be an industry to provide 'parking' or trailer parks to these people.
- An obvious boon for the elderly, disabled (esp the blind), soccer moms.
- Some car insurance jobs will go, and all the driver jobs will go. They will be replaced by jobs in making the mini-self-driving-houses and maintaining and repairing them. The total amount of miles driven will increase a lot, so the need for maintenance will also increase.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.