Group B Brake Performance and Test Methods
Choose and interpret the correct brake performance method for vehicle class, drive layout, electrical-mechanical braking and 4x4 or dual-purpose vehicles.
How to prepare for this year's assessment
Start with group and vehicle class, confirm whether a rule applies, follow the prescribed inspection or administration method, and classify only the evidence permitted by the live source.
Core concepts
Concept 1
Choose and interpret the correct brake performance method for vehicle class, drive layout, electrical-mechanical braking and 4x4 or dual-purpose vehicles.
Exam cue: Identify whether the scenario belongs to Group A or Group B before selecting a manual.
Concept 2
Classify the vehicle, check test-equipment suitability and apply the correct roller, plate or decelerometer procedure and efficiency criteria.
Exam cue: Classify the vehicle, check test-equipment suitability and apply the correct roller, plate or decelerometer procedure and efficiency criteria.
Concept 3
Identifying a class 4 dual-purpose vehicle and the appropriate brake test is expressly named in the 2026–27 guide topics.
Exam cue: Use the source version and effective date that apply during the live 2026–27 training year.
Concept 4
A 4x4 appearance alone does not establish dual-purpose classification or equipment suitability.
Risk pitfalls and guardrails
Selecting a brake method before verifying class, drive system and the current procedure.
Guardrail: Do not replace current manual wording with workshop preference, memory from an earlier year or an assumption based on appearance.
Treating workshop repair preference as the statutory MOT test outcome.
Guardrail: Do not replace current manual wording with workshop preference, memory from an earlier year or an assumption based on appearance.
Reproducing a sample answer without checking current application and evidence.
Guardrail: Use public examples to identify concepts only; the live source and current facts control the result.
Memory anchors
Classify Before Brake Test
Vehicle class and configuration control the method.
Protect the Driveline
Use only equipment and procedures suitable for the drive arrangement.
Valid Result Before Efficiency
Calculate only from a correctly performed test.
Group B Brake Performance and Test Methods: Source
Confirm the answer in the live DVSA guide, inspection manual or applicable special notice.
Group B Brake Performance and Test Methods: Sequence
Identify group and class, confirm application, use the prescribed method, then classify the evidence.
Group B Brake Performance and Test Methods: Annual Boundary
Keep the 2026–27 assessed topic allocation separate from live rule changes and earlier training years.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What service-brake efficiency applies to an M1 car first used on 1 October 2010?
An M1 car first used in 2008 is being assessed. What is its minimum service-brake efficiency?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
What is Pass Harbor?
Completely free exam prep for 247 UK exams.
- Practice questions
- Flashcards
- Study guides
- Mock exams
- No registration
- No paywall
- Start instantly
“No more expensive exam prep. Quality study tools should be accessible to everyone.”