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Question: 2.2.03-015

4 Points

Licenses: A A1 A2 B

What is the rule of thumb when calculating the braking distance for evasive braking on a dry, even and asphalted roadway?

Choose one or multiple correct answers
  • A. ({Speed in km/h}/{10} x {Speed in km/h}/{10}) : 2
  • B. ({Speed in km/h}/{10} x 5) : 2
  • C. ({Speed in km/h}/{10} x 3) : 2

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Correct answer

  • A. ({Speed in km/h}/{10} x {Speed in km/h}/{10}) : 2
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Comment

The rule of thumb for determining the stopping distance is: thinking distance (speed divided by 10 times 3) plus braking distance (speed divided by 10 times speed divided by 10). At 50 km/h, this is 50 divided by 10 times 3 equals 15 m thinking distance plus 50 divided by 10 times 50 divided by 10 equals 25 m braking distance. The stopping distance is 40 m. In case of emergency braking, this value is halved. That would be 20 m in this example.

Speed

Chapter 2.2.03

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