Why does 5 mph slower feel like it adds a bunch of time but 5 mph faster doesn’t affect the eta much.

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Something that’s always bothered me about driving is I can drive 5 mph over and barely speed up the gps, however if I accidentally drive 5 under the speed limit, (My brand new truck doesn’t have a speeding) it will add a bunch of extra time. Is there an equation or something that shows you how fast you’d have to go to actually lower the time needed to arrive. Is it just a mental thing or is it math. Any and all information welcome!

In: Mathematics

6 Answers

Anonymous 0 Comments

Many modern driving apps don’t use speed limits to calculate your ETA. Rather, they use the current speed of other users driving on the roads you are routed on.

Since most drivers are going 5-10 over the posted limit, driving even the actual speed limit will often take longer than the apps calculated times.

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