this post was submitted on 15 Oct 2024
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The gap you leave should be speed-dependent and about 2 seconds to allow for reaction time. Yes, this caps the highway's capacity to 0.5 cars per second per lane but roads are inherently inefficient.
Aye, and 2 seconds is the bare minimum. A company I have worked for wanted 4 seconds between you and the car in front. That always felt a little much, but it definitely helped prevent wrecks.
In my state, it's one car length(15-20 feet) for every 10mph. Good luck getting anyone to actually follow it though! Getting on a major highway here is like the Autobahn.
2 seconds assumes an instantaneous reaction and perfect road conditions. In the EU they'll teach you about 3s and at least +1 in poor conditions.
I was taught to look when the car in front drives past a landmark like a lamppost, then say to myself "Only a fool breaks the two second rule"
If you pass the lamppost before you finish saying it, you're too close
This is the only good answer. No need to distract yourself by figuring out your speed and guesstimating your gap like others are saying. Just count the seconds whenever you need to
3 seconds is the guideline I've been taught here in Sweden, but yeah. Riding too close is crazy dangerous and I don't understand why people keep doing it.
2 isn't much, over here they recommend 3 at highway speeds