this post was submitted on 18 Jul 2026
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United States | News & Politics

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Need for speed? Driving above the speed limit costs you — and doesn't actually save much time (apnews.com)
submitted 2 days ago by return2ozma@lemmy.world to c/usa@lemmy.ml
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[–] Nonconfrontational@lemmy.ml 1 points 2 days ago (1 children)

Exactly this, by driving 20% faster you're cutting off 20% of the total trip time, which can be massive on long drives.

[–] Alexstarfire@lemmy.world 6 points 2 days ago (1 children)

No, that's not how the math works out. Doubling your speed only halves the time it takes.

[–] Nonconfrontational@lemmy.ml 1 points 2 days ago (1 children)

If I'm driving 100km and I drive 120km/h

Im arriving 20% faster..

[–] Alexstarfire@lemmy.world 5 points 2 days ago (1 children)

No, you should actually follow through with the math. I used a simple example in hopes it would be obvious.

At a distance of 100km it take 60 minutes at 100kph. Change that to 120kph and it takes 50 minutes. 20% quicker would be 48 minutes. 20% faster gets you there 16.666% quicker.