Brake Testing

Brake testing is not just a maintenance task. It is evidence. When DVSA or the Office of the Traffic Commissioner examines a fleet’s maintenance record, roller brake test results are one of the first things they look at, and they look at the pattern, not just the most recent result.

A single test carried out at PMI tells part of the story. What regulators want to see is whether testing is planned and consistent, whether trailers are included, whether poor results are followed up with documented repairs and retests, and whether the operator can demonstrate that someone in management is reviewing the data. Many operators do the testing. Fewer can show meaningful management oversight of the results.

What a brake testing compliance review examines

PMI inspection records, roller brake test reports, defect reporting systems, maintenance planners, MOT history and repair documentation all form part of the picture. The question is whether those records tell a coherent and credible compliance story, or whether there are gaps that an investigating officer would find within minutes of sitting down with the files.

Common weaknesses we come across include missing loaded brake tests where the operation warrants them, recurring brake imbalance with no documented corrective action, trailer brakes that have not been tested on the same cycle as the tractor unit, borderline results that were accepted without comment, and poor or missing parking brake records. None of these is catastrophic in isolation, but combined they suggest a maintenance system that is going through the motions rather than managing risk.

Operators should be familiar with the GOV.UK guidance on HGV brake testing expectations: HGV brake testing guidance.

What a review typically covers

A useful brake testing review goes beyond confirming that reports exist. It assesses whether testing intervals remain appropriate for the vehicles and the distances covered, whether trailers receive the same management attention as powered vehicles, and whether poor results are backed by documented repair and retest records. It will also check whether the nominated Transport Manager or External Transport Manager is actively reviewing test results as part of routine compliance oversight, not just filing reports.

Other areas that often come up include:

• Consistency between PMI inspection intervals and brake test scheduling.
• Whether there is a clear process for taking a vehicle off-road pending a retest after a poor result.
• Brake test result trends across the fleet over time.
• Whether maintenance providers are recording and communicating defects properly.
• MOT performance as an indicator of ongoing maintenance quality.
• PG9 prohibition history and whether any prohibitions relate to brake performance.

When to seek support

Operators commonly look for brake testing support before a DVSA visit or compliance audit, when OCRS performance has deteriorated, when fleet size has increased and the old arrangements are under strain, or when preparing for a Traffic Commissioner hearing. It is also worth reviewing when a new maintenance provider takes over, to check that their testing regime aligns with the schedule and that records transfer correctly.

The one situation to avoid is waiting until records have been requested. At that point, gaps are visible and the conversation becomes much harder.

Making an enquiry

Prepare your fleet details, current PMI inspection intervals, maintenance provider arrangements, recent roller brake test reports and a summary of any known concerns. Details of MOT failures, PG9 prohibitions or DVSA visits are also useful. A Transport Manager or compliance specialist can then assess whether you need a targeted maintenance review, a broader transport compliance audit or ongoing support through an External Transport Manager arrangement.