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A wet country road between birch trees in autumn, one car a good distance ahead, broken yellow centre line.

Class B theory course · chapter 11 of 22

Speed, distance and braking distance

Reaction, braking and stopping distance, why speed increases braking distance so much, the three-second rule and adapted speed.

Read the chapter in the app Try chapter 1 free

The chapter in numbers

Lessons
2about 14 minutes of reading
Drawings
9diagrams and photographs made for the lessons they sit in
Exam tips
6passages that say what the test tends to ask here
Terms
2words explained where they are first used

Why this chapter

Speed is not just a number on a sign – it is physics. This chapter explains reaction and braking distance, why stopping distance grows far faster than speed, what counts as enough distance to the car in front, and how road surface and load change the arithmetic. These are numbers you must know, not just have heard of.

Written against

The lessons are written against these sources, and the explanations cite them.

  • Læreplan klasse B
  • vegvesen.no
  • Trafikkreglene

What the test asks

The practice questions for this chapter belong to one of the seven official themes of the theory test.

The mock-exam split is our own – Statens vegvesen publishes none.

Practise speed & positioning

The lessons, in order

  1. 1 Reaction distance, braking distance and stopping distanceWhat happens from when you spot a hazard until the car is stationary, and why speed matters so much. 7 min
  2. 2 Distance and adapted speedThe three-second rule, safe following distance and what it means to drive according to the conditions. 7 min

The lessons are part of full access – 149 kr for a week, 299 kr for a month. Chapter 1 is free, so you can see how the course is written first.

All 22 chapters

  1. 01Introduction
  2. 02The human in traffic
  3. 03The car – construction and systems
  4. 04Checks and maintenance
  5. 05The road and the traffic environment
  6. 06The traffic rules and basic duties
  7. 07Signs, signals and police directions
  8. 08Giving way and right of way
  9. 09Observation and communication
  10. 10Positioning and lane use
  11. 11Speed, distance and braking distance
  12. 12Junctions and roundabouts
  13. 13Overtaking and meeting
  14. 14Different roads and surroundings
  15. 15Light and road-surface conditions
  16. 16Other road users
  17. 17Stopping and parking
  18. 18Eco-friendly driving
  19. 19Load and trailer
  20. 20The driver's responsibility
  21. 21At a traffic accident
  22. 22Risk and attitudes

Read the whole chapter

Full access opens all 22 chapters, mock exams with new questions every time and the sign drill – 149 kr for a week, 299 kr for a month, no automatic renewal.

Full access – 299 kr Get started free