What is the UK DGSA Road Mode examination?

It is an examination administered by SQA on behalf of the UK Department for Transport (DfT) to certify Dangerous Goods Safety Advisers under the Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations (CDG) and ADR.

Who must appoint a Dangerous Goods Safety Adviser (DGSA)?

Any undertaking in the UK whose activities include the carriage, or the related packing, loading, filling, or unloading, of dangerous goods by road, unless specifically exempt (e.g. transport below 1.1.3.6 threshold or LQ/EQ limits).

What is the structure of the official UK DGSA exam?

The official exam consists of written open-book case study papers (Core, All Classes, and Road Mode). Candidates must achieve at least 65% in each paper to qualify for the 5-year vocational certificate.

How long is the DGSA certificate valid?

The Vocational Certificate for Dangerous Goods Safety Advisers is valid for 5 years. Advisers must pass a re-examination within the 12 months preceding expiry to renew their certificate.

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2026 Statistics

Key Facts: UK Dangerous Goods Safety Adviser Road Mode Examination Exam

100 Qs

Practice Questions

Study Adaptation Bank

65%

Official Pass Mark

SQA DGSA Regulations

5 Years

Certificate Validity

UK DfT / ADR 1.8.3

SQA

Exam Body

Department for Transport

Open Book

Exam Format

Official SQA Rules

4 Domains

Blueprint Coverage

ADR Road Transport

The UK DGSA Road Mode assessment prepares candidates for certification as a Dangerous Goods Safety Adviser under UK CDG/ADR regulations. This is an English-language MCQ study adaptation for the official assessment; it does not replace required practical, oral, written, or hands-on performance.

Sample UK Dangerous Goods Safety Adviser Road Mode Examination Practice Questions

Try these sample questions to test your UK Dangerous Goods Safety Adviser Road Mode Examination exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under ADR and the UK Carriage of Dangerous Goods Regulations (CDG), which class of dangerous goods covers flammable liquids having a flash-point of not more than 60°C?

A.Class 3

B.Class 2

C.Class 4.1

D.Class 8

Explanation: Under ADR Chapter 2.2, Class 3 covers flammable liquids and liquid desensitized explosives. Flammable liquids are liquids with a flash-point of not more than 60°C.

2What is the primary significance of Packing Group I (PG I) assigned to a dangerous substance under ADR classification?

A.Substances presenting medium danger

B.Substances exempt from packaging testing

C.Substances presenting high danger

D.Substances presenting low danger

Explanation: ADR 2.1.1.3 defines three packing groups according to the degree of danger presented: Packing Group I represents substances presenting high danger, Packing Group II medium danger, and Packing Group III low danger.

3Under ADR 1.1.3.6 (the small load threshold), what is the total maximum score allowed before full ADR carriage provisions apply to a transport unit?

A.2,000 points

B.1,000 points

C.10,000 points

D.500 points

Explanation: Under ADR 1.1.3.6, when the calculated total score for a load of packaged dangerous goods does not exceed 1,000 points, small load exemptions apply, exempting the transport unit from full ADR provisions such as orange-colored plate marking and driver ADR certificate requirements.

4What is the multiplier used to calculate calculated points for Transport Category 2 dangerous goods under ADR 1.1.3.6?

A.0

B.50

C.1

D.3

Explanation: ADR 1.1.3.6.4 specifies that for Transport Category 2, the quantity in litres or kilograms must be multiplied by 3 to calculate points (e.g. 333 units x 3 = 999 points).

5Which participant in the dangerous goods chain is primarily responsible for providing the carrier with dangerous goods transport documentation and information under ADR 1.4.2.1?

A.The Driver

B.The Consignor

C.The Consignee

D.The Enforcement Officer

Explanation: ADR 1.4.2.1 states that the Consignor is responsible for ensuring that dangerous goods are classified and authorized for carriage, and for furnishing the carrier with information, data, and required transport documentation.

6How long must an undertaking retain copies of dangerous goods transport documents carried by road under ADR 5.4.4?

A.At least 1 month

B.At least 5 years

C.At least 12 months

D.At least 3 months

Explanation: ADR 5.4.4 requires the consignor and the carrier to retain a copy of the dangerous goods transport document and information for a minimum period of 3 months.

7Which of the following transport operations is exempt from the requirement to appoint a Dangerous Goods Safety Adviser (DGSA) under ADR 1.8.3.2?

A.Haulage contractors specializing in Class 1 explosive bulk shipments

B.Undertakings transporting 20,000 litres of petrol in fixed tank vehicles daily

C.Chemical manufacturing companies filling bulk tank-containers for international road transit

D.Undertakings whose activities concern quantities not exceeding 1.1.3.6 small load thresholds

Explanation: ADR 1.8.3.2 allows Contracting Parties to exempt undertakings whose main or secondary activities concern dangerous goods in quantities not exceeding the thresholds defined in ADR 1.1.3.6 (or 3.4 / 3.5) from appointing a DGSA.

8Under ADR Chapter 3.4, packages containing dangerous goods packed in Limited Quantities (LQ) must be marked with which emblem?

A.A solid orange rectangle measuring 400 mm x 300 mm

B.A circle enclosing the letter 'E' and a sequence number

C.A square mark with a tree and fish symbol

D.A diamond-shaped mark with top and bottom portions blackened

Explanation: ADR 3.4.7 specifies that packages containing dangerous goods in limited quantities must bear a diamond mark (square set at an angle of 45°) with top and bottom portions and surrounding line in black, with a white central area.

9A vehicle carries 200 kg of UN 1005 Ammonia, anhydrous (Class 2.3, TC 1, multiplier 50) and 150 L of UN 1202 Diesel fuel (Class 3, TC 3, multiplier 1). Calculate the total ADR 1.1.3.6 points and determine if the 1,000-point threshold is exceeded.

A.10,150 points (Exceeded)

B.10,000 points (Exceeded)

C.950 points (Not exceeded)

D.350 points (Not exceeded)

Explanation: UN 1005 (Transport Category 1) has a multiplier of 50: 200 kg x 50 = 10,000 points. UN 1202 (Transport Category 3) has a multiplier of 1: 150 L x 1 = 150 points. Total points = 10,000 + 150 = 10,150 points, which significantly exceeds the 1,000-point threshold.

10A driver transports 200 L of UN 1263 Paint (Packing Group II, Transport Category 2) and 300 L of UN 1263 Paint (Packing Group III, Transport Category 3). Does this load qualify for small load exemption under ADR 1.1.3.6?

A.Yes, because all items share the same UN number

B.No, total points equal 1,100, exceeding 1,000 points

C.Yes, total points equal 900, which is <= 1,000 points

D.No, because UN 1263 Paint cannot be combined across different packing groups

Explanation: Transport Category 2 points: 200 L x 3 = 600 points. Transport Category 3 points: 300 L x 1 = 300 points. Total points = 600 + 300 = 900 points. Since 900 <= 1,000, small load exemption applies.

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