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How Much Will Autonomous Cars Really Help? (theconversation.com)
An anonymous reader writes: An opinion piece at The Conversation questions the common belief that autonomous vehicles will easily solve a host of problems with road-based travel, including safety and traffic. "Assuming autonomous vehicles were one meter apart and traveling at 100 kilometers per hour (an aim that has been stated as the ultimate hope) this would mean around 25,000 people per hour could be taken down a freeway lane. While impressive, this movement capacity is only half that of a train. But getting to this capacity means 100% of vehicles are under control of a guidance system, with none under independent control. As soon as one car does this, the whole system would slow down considerably, as is seen on freeways now." The writer argues that a better role for autonomous cars might be to take passengers to and from hubs for public transportation.
... is getting back from the pub after I've had a skinful.
By benefiting (mostly) rich white people instead of (mostly) poor minorities, it helps rake in campaign contributions from the Right People
Your entire post was hilarious; but I especially loved this bit. You've obviously never ridden on an urban mass transit system of any kind.
#DeleteChrome
I do not really believe that self driving cars will significantly reduce my transportation time. But I expect them to reduce the number of traffic accident. In a traffic jam, drivers can frustrated and bump in each other. I highly doubt self driving car would do that. Also, I do not care as much being in a traffic jam if I am not the one driving the car. Finally, if the car drive itself, then I can take more long distance trips easily: push the buttons, go to sleep, wake up in a different state.
This is the real reason I loved riding public transportation so much when I was living in France. It might not be the fastest way of moving around. But it was definitely the way that was consuming the less of my attention time. Made me arrived at work after 30 minutes of playing the nintendo DS. Much better than after 20 minutes of dealing with traffic congestion.
Well, it eliminates whole classes of cases for accidents. All those people who drive while they are drunk, or drive too fast because they are too late, or drive too fast because they like driving fast, or drive too fast because they don't know better, or etc. There are tons of accidents caused by older people who are too senile to drive a car. This can be helped by taking away their license, but staying at home surely isn't a good therapy for old people to stay healthy.
Also, if all cars are driverless, they always know when faster cars can get before slower cars on a one lane per direction road.
This won't solve all accidents, but it will certainly improve the situation.
Where do you live that politicians like rail? My politicians love cars, and have been actively removing rail at every chance.
I also choose my own level of risk tolerance.
False. You're presuming to make that choice for anyone sharing the road with you.
Il n'y a pas de Planet B.
The article suggests a new mode of driving only possible by driverless cars, but 1 meter apart is kinda ridiculous. A tire failure in any one of those cars could cause a pileup of unimaginable purportions. I'd settle for autonomous cars driving at human following distances because we know humans can do it. Even at human following distances autonomous cars can improve things because even the simplest actions on the road have huge unseen consequences from the drivers perspective. You can avoid the problem where a dumb driver can tap on his brakes for no good reason and sends ripples of break lights miles behind him/her. Sometimes I wonder how many of those drivers drive with two feet. One on the brake and one on the accelerator.
it will cause a disastrous accident.
Unlikely. It will almost certainly be less severe than if humans were driving. Humans typically take 1 second to 3.5 seconds to realize something is wrong, and transfer their foot from the accelerator to the brake. During that time, a car going 70mph will travel 100 feet or more ... before it even starts to brake. A self-driving car can begin braking in 10 milliseconds. With humans, the cars will begin braking in sequence, one after another. This can result in a chain reaction pileup, with the most severe accidents happening far back in the pack. SDCs will all brake simultaneously, with those further back having plenty of time to stop.
Believe it or not, the engineers designing these things have actually thought about these issues, and done extensive testing. If 1 meter spacing wasn't safe, they wouldn't be doing it.