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this post was submitted on 02 Nov 2025
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No Stupid Questions
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@chicken@lemmy.dbzer0.com @nostupidquestions@lemmy.world
One day I was driving on a highway at roughly 80km/h (no idea how much is it in miles per hour, we use metric around here), and there was a car almost glued to the back of the car I was driving, totally ignoring the "following/tracking distance" thing we're used to learn during driving school (the faster the vehicles, the farther they should be from one another, so if the vehicle ahead needs to do a sudden break, the vehicle behind have the time to react and break as well with no collisions). The car I was driving has a quite sensitive break light: a gentle push is enough for the breaking light to light up without actuating the breaking system (not ABS, it's an old car), so I had a quite unusual idea: Morse coding "DISTANCE" to the driver in the car behind through the breaking lights, using extremely gently pushes on the breaking pedal while I kept driving. I'm not sure if the driver could understand Morse, but at least I tried.
And that's a problem for your scenario where "nearby cars" were to contact each other: even though they could listen to each other, could they actually understand each other?
Divide kmh by two and round toethe nearest 5/10 is close enough to mph for discussion purposes. It is off at times, but for discussion purposes it is close enough that your impression of how they drive is the same. (90 vs 100 kmh - not enough to matter in discussion - it matters in court so don't try this in the real world)
Or we can stick to kph for discussion purposes, since that's what most of the world uses
Sigh... Everyone is used to what they have used all their life and refuse to learn anything else...
Is there a reason why people on the metric system have a need to be learning imperials? (I know 1 mile = 1.6 km, but that's another matter)
What does anything matter. If you deal with someone else at least one of you needs to learn the others systems. You and your neighbor probably speak the same language so it is easy, but the more differences the more there is to learn. You can choose to not deal with people in the US who only know US systems, or you can work with them by learning. I have no idea what your motivations are, but whatever they are they becomes your reasons to do or not do something.