this post was submitted on 20 Jun 2024
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This isn't true, if they can stop at an impossibly fast speed, why can't you? Let's say they stop in 3 seconds, that means their brakes can get them from 65 to 0 in 3 seconds. If you're 2 seconds behind them, you have 5 seconds to stop. If you react within 2 seconds, you should be able to stop in 3 seconds. The only reason you would not be able to, is if you didn't do maintenance on your brakes,
There's almost no person in the world who can't react in 2 seconds.
What if they slam into a truck at highway speeds? Instantly they've gone ftom 100km/h to 0, and you have to stop your car before you slam into them. How much space do you need between you in this scenario?
With 2 seconds worth of space, you have about 55 meters between you, and a normal reaction time would be about 250ms, which leaves you 1.75 seconds and 48 meters to come to a complete stop. And hopefully the person behind you reacts accordingly and doesn't slam into you as well.
This is the answer, and is exactly what happens when you see those accidents involving like 6 Plus cars. Too many people riding way too close together at high speeds and none of them were able to stop in time when the first car suddenly stopped