Under which conditions is it allowed to deviate from a driving lane?

- At a slow speed and by deviating sharply.
- Correct answer: Provided that no risk or disturbance is caused to any other road user.
- Only after signaling and looking at the mirrors.
- It is absolutely prohibited to deviate from the driving lane.
Why this is the answer
The correct answer in the official bank: Provided that no risk or disturbance is caused to any other road user.
You may deviate from your driving lane when it creates no risk or disturbance to other road users. Signaling and looking in the mirrors are part of the preparation, but they are not enough on their own: you must make sure there is enough of a gap and that no one has to brake or swerve because of you. The prohibition on deviating is not absolute.