What qualifications must a private accompanying person (Begleitperson) possess to supervise a Category B learner driver during private practice drives in Switzerland?

1. Any person who is at least 18 years old and holds a probationary driving licence
2. Must be at least 23 years old and have held an unrestricted Category B driving licence for at least 3 years (not on probation)
3. Must be an immediate family member who has owned a car for 5 years
4. Must hold a professional driving instructor federal diploma