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Common theory questions

How big is the time gain per 10 kilometres if you drive at 110 km/h instead of 100 km/h?

If you increase your average speed by 10 km/h, the approximate time gain per 10 kilometres is:

  • One minute per 10 kilometres at speeds below 90 km/h.
  • 30 seconds per 10 kilometres at speeds above 90 km/h.

Despite being both dangerous and prohibited, many drivers exceed speed limits in an attempt to save time. However, the actual time gain per 10 kilometres at a speed increase of 10-20 km/h is actually quite small, and continues to decrease the faster you drive.

On the other hand, increasing your speed by 10-20 km/h greatly extends the stopping distance. In other words, by driving too fast, you take a great risk to save a little bit of time.