4 ms·

at 75mph, even with a very quick reaction time of 0.7 seconds to shift your foot from gas to brake, your already approching 80', and haven't even started slowin

at 75mph, even with a very quick reaction time of 0.7 seconds to shift your foot from gas to brake, your already approching 80', and haven't even started slowing down. Yanking the wheel sideways on most vehicles that speed means you either roll-over, or side-swipe a vehicle in the next lane, since you didn't have time to check that lane before swerving. I think you are drastically overrating your driving abilities.

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dawnerd 5y ago
Really if its that dark out and you can't see that far, on autopilot or otherwise, you shouldn't be going that fast. It's the same thing with people speeding in dense fog.
- nradov 5y ago
  In most states a driver who runs into a stationary object is always considered at fault and can be cited for a moving violation. That rule applies even if the object is difficult to see. The driver is legally required to reduce speed based on the conditions.
  - s1artibartfast 5y ago
    Not to be pedantic but do you have a source? I actually want to know. It seems like such laws would have a reasonable exemption for unexpected objects in roadways. For example, I have a friend who successfully sued the LA City government after running into a downed light pole on a city street that was not visible due to low lighting.
michaelt 5y ago
Personally I consider it my responsibility, as a driver, to avoid any collisions with stationary objects. That means managing my speed and visibility accordingly. Isn't that just basic, competent driving?
ModernMech 5y ago
IMO your foot should be on break if you're in FSD mode. That's where my foot is using just cruise control even. The slightest tap on the break turns off cruise control. Also, if it's so dark that you can't stop before hitting a car in front of you, then you're going too fast. The speed limit is a max, not a min, and it changes depending on prevailing road conditions no matter what the posted signs say. For example, if it's raining and you get into an accident, you can be fined for speeding even if you were going the speed limit. Going 75mph in pea-soup fog is a recipe for disaster. The dead of night has the same calculus. You should only go as fast as you can see. A good rule of thumb is you should always be able to see 12 seconds clearly ahead of you. That's how some professional human drivers manage to drive literal millions of miles over a career without a single accident. Frankly, all this talk about how Teslas will improve the safety of traffic because they perform at a superhuman level is belied by this video evidence. Apparently these machines only drive as well as the drivers who programmed them. I wonder if there are even any professional drivers on the engineering team consulting on this project. If the car can't even operate within the envelope of its own sensing and computing limitations, then how can we make any claims about its safety? It's driving at top speed in situations where it's essentially blind. When I'm blinded, I pull over. When the Tesla is blinded, it doesn't even know. See also, the guy who ran full speed into a tractor trailer and lost his head. It's been years since that incident and Teslas are still driving full speed into things they can't see. How is that a basis for platform that will save us all due to how safe it is?
everforward 5y ago
They're not going to roll unless it's something incredibly top heavy like a Jeep. It's a car, turning the wheel 90 degrees only turns the wheels like 10 degrees. Also, a sideswipe is almost certainly preferable for everyone than plowing head on at full speed. Take a guess where that truck is going to go after it gets hit at 75 mph. Probably into another lane, potentially into oncoming traffic. Human reactions are poor. Houseplant reactions are worse. Tesla acted more like a houseplant than a human
- theptip 5y ago
  > a sideswipe is almost certainly preferable for everyone than plowing head on at full speed. I’m fairly sure this is not true. Modern cars have lots of energy-absorbing crumple zones in the front, plus airbags. Head-on is the most highly-optimized crash orientation. Side-swipes are I believe the worst case, because there is so little protection for the driver.

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dawnerd 5y ago

Really if its that dark out and you can't see that far, on autopilot or otherwise, you shouldn't be going that fast. It's the same thing with people speeding in dense fog.

nradov 5y ago
In most states a driver who runs into a stationary object is always considered at fault and can be cited for a moving violation. That rule applies even if the object is difficult to see. The driver is legally required to reduce speed based on the conditions.
- s1artibartfast 5y ago
  Not to be pedantic but do you have a source? I actually want to know. It seems like such laws would have a reasonable exemption for unexpected objects in roadways. For example, I have a friend who successfully sued the LA City government after running into a downed light pole on a city street that was not visible due to low lighting.

michaelt 5y ago

Personally I consider it my responsibility, as a driver, to avoid any collisions with stationary objects. That means managing my speed and visibility accordingly. Isn't that just basic, competent driving?

ModernMech 5y ago

IMO your foot should be on break if you're in FSD mode. That's where my foot is using just cruise control even. The slightest tap on the break turns off cruise control. Also, if it's so dark that you can't stop before hitting a car in front of you, then you're going too fast. The speed limit is a max, not a min, and it changes depending on prevailing road conditions no matter what the posted signs say. For example, if it's raining and you get into an accident, you can be fined for speeding even if you were going the speed limit. Going 75mph in pea-soup fog is a recipe for disaster. The dead of night has the same calculus. You should only go as fast as you can see. A good rule of thumb is you should always be able to see 12 seconds clearly ahead of you. That's how some professional human drivers manage to drive literal millions of miles over a career without a single accident. Frankly, all this talk about how Teslas will improve the safety of traffic because they perform at a superhuman level is belied by this video evidence. Apparently these machines only drive as well as the drivers who programmed them. I wonder if there are even any professional drivers on the engineering team consulting on this project. If the car can't even operate within the envelope of its own sensing and computing limitations, then how can we make any claims about its safety? It's driving at top speed in situations where it's essentially blind. When I'm blinded, I pull over. When the Tesla is blinded, it doesn't even know. See also, the guy who ran full speed into a tractor trailer and lost his head. It's been years since that incident and Teslas are still driving full speed into things they can't see. How is that a basis for platform that will save us all due to how safe it is?

everforward 5y ago

They're not going to roll unless it's something incredibly top heavy like a Jeep. It's a car, turning the wheel 90 degrees only turns the wheels like 10 degrees. Also, a sideswipe is almost certainly preferable for everyone than plowing head on at full speed. Take a guess where that truck is going to go after it gets hit at 75 mph. Probably into another lane, potentially into oncoming traffic. Human reactions are poor. Houseplant reactions are worse. Tesla acted more like a houseplant than a human

theptip 5y ago
> a sideswipe is almost certainly preferable for everyone than plowing head on at full speed. I’m fairly sure this is not true. Modern cars have lots of energy-absorbing crumple zones in the front, plus airbags. Head-on is the most highly-optimized crash orientation. Side-swipes are I believe the worst case, because there is so little protection for the driver.