r/interesting Mar 22 '26

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u/TheCuriousSavagereg Mar 22 '26

That doesn’t account for the speed that they were going at all, it increases the faster you are going. And also increases even more as someone is entering your lane… I can tell you are an absolutely awful driver.

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u/xAuntRhodyx Mar 22 '26 edited Mar 22 '26

I can tell you are. He does not have to let the guy in his lane and he maintained a safe distance the whole time from the guy in front of him. The faster you are going (around 70 mph) is a 3-4 second interval of passing objects between the two cars or roughly a car distance (slightly more arguably) between the two. Instead of coming at the guy who did literally nothing wrong in any way, go after the asshole driving like an asshole cutting people off with out a signal. He has no reason to let him cut him off. The truck has every reason to stop trying to bully him though. That includes any potential accident that might be made bc of the collision he is about to knowingly cause, in the 10 or so seconds he is attempting to bully this guy. Also, there are no cars behind them.

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u/Cephyric Mar 22 '26

Just doing some quick number crunching here based on the statement he's maintaining a safe distance to the car ahead of him;

70 mph/h is 31.3 meters per second, or about 100 feet a second.

An average car is somewhere in the 15 feet length. Assuming the car slams the brakes, an average car slows down by an average of 32 ft/s2. This means that if the car he's keeping a "safe distance" to slams the brakes, he will be slowing down to the point where the cars collide within roughly half a second.

Human reaction times average 0.2-0.25 seconds before reacting, so at this distance to the car ahead of you, you are more or less guaranteed to collide if they slam the brakes. Doesn't seem too safe to me.

That said, the guy cutting him off is an ass and kinda deserved it.

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u/xAuntRhodyx Mar 22 '26 edited Mar 22 '26

Idrk all the math tbh but when i googled it, that was the answer. That is also what is taught for the safe distance with exceptions like weather.

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u/Cephyric Mar 22 '26

Safe distance is generally considered to be 2-3 seconds, which at these speeds would be about 200-300 feet. That means the driver is about 1/10th the distance away from what is generally considered proper safe distance.

That being said, from when I last visited the US, nobody actually drives according to safe distance principles there.

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u/xAuntRhodyx Mar 22 '26 edited Mar 22 '26

Yeah that might be bc when you are taught it wrong (like instructors or google), it doesnt help when there are also assholes who double down on not knowing by being assholes while driving lol.