Cab24 Akademie

Marking and labelling of packages

A package shows what is inside with the UN number, labels and special marks. You learn the labels of the classes, their minimum sizes, the orientation arrows and the marks for environmentally hazardous substances, batteries, limited quantities and overpacks.

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From the key facts

  • Every package bears the UN number preceded by ‘UN’, character height at least 12 mm; up to 30 l/30 kg at least 6 mm (ADR 5.2.1.1).
  • Marks must be clearly visible, legible and able to withstand the weather (ADR 5.2.1.2).

All key facts, the questions with explanations and the exam simulation are part of the course.

Sample questions from this topic

3 of 26 questions free to try. All questions with explanations and the exam simulation are part of the course.

Question 1: Which information must, as a rule, be shown on every package containing dangerous goods?

  • The driver's name and the vehicle's registration number
  • The hazard identification number, e.g. ‘33’
  • The UN number preceded by the letters ‘UN’
Show answer

Correct answer: The UN number preceded by the letters ‘UN’

Every package must be clearly and durably marked with the UN number, preceded by ‘UN’. The hazard identification number belongs on the orange-coloured plate.

Legal reference: ADR 5.2.1.1

Question 2: What minimum character height must the UN number have on a 200-litre drum?

  • 12 mm
  • 6 mm
  • 25 mm
Show answer

Correct answer: 12 mm

The minimum height is 12 mm. Only for packages of up to 30 litres or 30 kg (and cylinders of up to 60 litres) is 6 mm enough.

Legal reference: ADR 5.2.1.1

Question 3: What minimum character height applies to the UN number on a jerrican containing 20 litres?

  • 6 mm
  • 3 mm
  • 12 mm
Show answer

Correct answer: 6 mm

For packages of not more than 30 litres or 30 kg, a character height of 6 mm is enough. Only at 5 litres or 5 kg or less is an appropriate size sufficient.

Legal reference: ADR 5.2.1.1

Ready to learn?

Theory for the ADR training certificate: hazard classes, marking and orange plates, documents, equipment, exemptions, tunnels and accidents – plus the specialisation courses tank, class 1 and class 7.

CHF 9.90 one-time Buy course