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.
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