★ 4.6 · 8’700+ reviewsLearn with the Car AppOfficial theory questionsStart now
New in the 2027 exam

Swiss Driving Theory · RTA / TRO

Accident risk & control loop

Understanding how an accident comes about is more useful than memorising statistics. Two simple models are enough: the control loop and the hazard fork.

New drivers are at greater risk

The statistics are clear: new drivers have considerably more accidents than experienced ones.

The most critical moments are the first months after the test, weekend nights and journeys with passengers of the same age. It is not a question of skill at the wheel, but of experience in spotting hazards and of willingness to take risks.

Typical causes of accidents

  • Inexperience: hazards are recognised later and misjudged.
  • Distraction: phone, vehicle screens, passengers.
  • Speed unsuited to the conditions.
  • Fatigue and alcohol, especially at night.

Model 1: the control loop

Everything is connected: what changes one element changes the whole system.
DriverVehicleRoad environment

Three elements influence one another: driver, vehicle and environment. What changes one changes the whole.

An example: rain (environment) lengthens the braking distance (vehicle) and demands more concentration (driver). If you are tired as well, all three factors deteriorate at once.

The loop runs continuously: you perceive, decide, act – and the resulting situation starts the cycle again.

Model 2: the hazard fork

The same situation can end in three different ways.
Harmless outcomeCritical outcomeDangerous outcome

The same situation can develop in a harmless, critical or dangerous way. What decides the outcome is not how hard you react, but when you react.

The earlier you intervene, the smaller the means required: easing off the accelerator in good time replaces an emergency stop three seconds later.

Your strategies against risk

  • Drive defensively: observe, anticipate, keep reserves.
  • Give up risky manoeuvres: tight overtaking, «sporty» driving on unsuitable roads.
  • Know your own limits: fatigue, emotions, lack of experience in snow or fog.
  • Gain experience deliberately, not by collecting near-misses.

Practise now

Practise with official exam questions

Over 800 official questions of the Swiss driving theory exam.

Go to the App

Related topics

Practise all topics with the Theory App – the learning app for the Swiss theory test.

← Back to contents