What a PG9 means for your vehicle and licence risk

A PG9 is a formal prohibition notice issued by DVSA when a vehicle or trailer has a serious defect, or when its condition or use breaches the rules closely enough to justify taking it off the road. For operators, it is not just a roadside inconvenience. It can stop work immediately, trigger missed deliveries or services, and create evidence that the Traffic Commissioner may later examine when looking at maintenance systems and management control.

The main risk is not only the defect itself. It is what the PG9 says about how the defect was allowed to exist, whether daily checks were done properly, whether inspections were planned and recorded, and whether the transport manager had effective oversight. That is why every prohibition needs both a repair response and a compliance response.

What a PG9 is and when DVSA uses one

A PG9 is the prohibition form used by DVSA examiners to prohibit the use of a vehicle or trailer because of defects or other roadworthiness and compliance concerns. In practice, it is most often seen after a roadside check, fleet check, encounter at an operator’s premises, or inspection at a test station.

DVSA can issue a prohibition for goods vehicles, trailers, buses, coaches and other vehicles within its enforcement scope. In operator licensing terms, the most serious cases usually involve HGVs and PSVs, but van fleets and other commercial users should not assume they are outside the risk of enforcement action.

There are two main types.

Immediate prohibition

An immediate prohibition means the vehicle or trailer must not be used on the road from that point, except in any very limited way stated on the notice itself. This is used where the defect is serious enough to create an immediate risk to road safety, or where the vehicle’s condition is plainly unacceptable. Typical examples include dangerous brake defects, severely damaged tyres, insecure steering components, serious suspension faults, or major structural issues.

Delayed prohibition

A delayed prohibition allows a short period before the prohibition takes effect. DVSA uses this where the defect is serious enough to require formal action, but not so dangerous that the vehicle must stop there and then. The notice will state the date and time when the prohibition starts. If the defect is not repaired and properly dealt with before then, the vehicle becomes prohibited from that point.

The distinction matters operationally, but both forms are significant from a licensing perspective. A delayed prohibition is not a softer outcome in any wider compliance sense. It still shows DVSA found a defect serious enough to justify formal prohibition action.

In Great Britain, operators will usually deal with DVSA and, where licensing issues arise, with the Traffic Commissioner. The basic concept is similar to enforcement elsewhere, but the UK operator licensing system and the role of the Traffic Commissioner are specific and should not be confused with general EU practice.

What happens when a vehicle or trailer is prohibited

Once a PG9 has been issued, the practical effect depends on the wording of the notice and whether it is immediate or delayed. The starting point is simple. You cannot carry on using the vehicle or trailer in ordinary service as though nothing has happened.

If the prohibition is immediate, the vehicle or trailer is effectively VOR from that point. It should be stood down from operations, controlled by management, and not sent back out until the defect has been rectified and the prohibition requirements have been cleared. If it is loaded, you may need to arrange recovery, load transfer, trailer swap, or a controlled movement if one is specifically permitted.

You should not assume a driver can simply limp it back to base. Whether any movement is allowed depends on the notice and the examiner’s directions. Some prohibitions may allow movement to a place of repair under stated conditions, but that is not automatic. If the notice does not permit movement, moving it on the road is likely to create a further offence and a much worse evidential position.

For trailers, the same principle applies. A prohibited trailer cannot simply be attached to another unit and carried on in service. Loading plans, depot planning, workshop capacity and customer communication all need to move quickly.

Operationally, a prohibition can affect:

• planned deliveries or passenger services
• driver hours and duty planning
• load security and transhipment
• workshop scheduling
• replacement vehicle allocation
• customer service commitments
• insurance and incident reporting, depending on the circumstances

If the defect is load related, such as overloading, insecure load, or a condition created by loading practice, the issue may not be solved by a mechanical repair alone. The load may need to be adjusted, removed or resecured before any lawful movement can happen.

Why operators get PG9s in the first place

Most prohibitions can be traced back to one of two broad causes. Either a serious defect developed and was not picked up or repaired in time, or the operator’s systems were too weak to prevent an unsafe vehicle or trailer reaching the road.

Common defect categories include:

• brakes and brake imbalance
• tyres, tread depth, sidewall damage, exposed cords
• steering and suspension wear or damage
• lighting defects where severity justifies prohibition
• chassis or body condition
• wheel security
• air leaks or hydraulic leaks
• load security failings
• coupling device defects
• emissions related issues where relevant to enforcement
• trailer defects that have been missed because the trailer fleet is less tightly controlled than units

The compliance causes behind those defects are usually more revealing than the defect itself.

Weak safety inspection planning

If periodic inspections are late, missed, or not tailored to use and mileage, defects remain in service longer than they should. The DVSA Guide to Maintaining Roadworthiness expects inspection intervals to reflect actual operation, not a fixed calendar habit that no longer matches the fleet’s work.

Poor quality inspections

An inspection sheet that is signed but superficial is not a defence. If brake wear, tyre damage or steering defects should have been obvious at inspection, a prohibition raises questions about inspection quality, technician competence and review by management.

Defective daily walkaround reporting

Drivers should be carrying out proper daily defect checks and reporting issues before use. If the same kind of defect appears repeatedly, or if a serious defect was plainly visible and the driver reported no defect, the operator has a daily reporting problem as well as a maintenance problem.

Weak repair control

Some fleets identify defects, but do not control rectification properly. Jobs are deferred without assessment, repair dates drift, and there is no clear sign-off that the vehicle was safe before returning to service.

Poor trailer management

Trailers often generate disproportionate risk because they move between sites and tractors, and responsibility becomes blurred. If trailer inspections, brake testing, tyre management and defect reporting are not tightly recorded, a trailer prohibition can expose a gap in management control very quickly.

Record gaps

At public inquiry level, one serious issue is not only whether the defect existed, but whether the operator can prove what checks were done beforehand. Missing inspection sheets, incomplete defect books, unsigned repair records and absent brake test evidence all make the position worse.

This is where having one place to control inspection dates, defect workflows and supporting evidence matters. We built Operator Compliance around the roadworthiness expectations operators actually face, including the need to keep signed records and deadlines in order. If you want to see how we structure those controls, our vehicle and driver compliance features set out the practical recordkeeping side.

What to do straight away after a PG9

The first few hours matter. A calm, controlled response will protect safety first and preserve the evidence you may later need.

1. Secure the vehicle or trailer

Treat it as VOR immediately, unless the notice expressly allows limited movement. Inform the driver, traffic office, workshop and transport manager. Stop any further allocation in planning systems.

2. Read the notice carefully

Check exactly what is prohibited, when the prohibition takes effect, and whether any movement to a place of repair is permitted. Do not rely on assumptions or second-hand accounts from the roadside.

3. Control the load and service impact

Decide whether you need recovery, a replacement vehicle, trailer change, load transfer or service cancellation. For PSV operation, think immediately about service continuity and whether a replacement vehicle is compliant and available.

4. Capture evidence at once

Obtain photographs of the defect, the vehicle, the trailer if relevant, and the load if load security or overloading is involved. Keep copies of the PG9, any inspection report, and any notes from the examiner. Record who was present, what was said, and the exact time and location.

5. Pull the maintenance history

Retrieve the latest safety inspection record, repair history, driver defect reports, brake test evidence, MOT or annual-test history, and any previous related defects. If the issue concerns a trailer, pull the trailer file, not just the unit file.

6. Instruct repair under control

Send the vehicle or trailer to an appropriate workshop, if movement is permitted, or arrange recovery. Make sure the repair instruction identifies the prohibited defect clearly and requires confirmation of rectification, not just a generic workshop invoice.

7. Get independent confirmation where needed

For serious brake, steering, suspension or structural issues, a proper inspection and written technical sign-off is worth having. If a prohibition requires clearance inspection or official removal process, follow that exactly.

8. Review whether the defect should have been caught earlier

Check the last driver walkaround report. Check the date and content of the last safety inspection. Ask whether the defect was visible, audible or measurable at those earlier stages.

9. Escalate internally

The transport manager should review the case, not leave it as a workshop-only event. If the issue suggests a system weakness, open an internal investigation and decide whether wider fleet checks are needed.

10. Close out with corrective action

Do not stop at repair. If the root cause was missed inspections, weak driver reporting, poor trailer control or inadequate workshop follow-up, put corrective measures in place and record them.

If your existing process is split across paper files, spreadsheets and depot inboxes, that close-out stage is where things often go missing. We designed OperatorCompliance to keep the event, evidence and sign-off in one auditable place. If you need to discuss how that works in your operation, you can speak to us about your compliance process.

How a PG9 can affect your operator-licence position

One prohibition does not automatically mean licence action, but it can become very important evidence. The Traffic Commissioner is concerned with whether operators have effective and continuous arrangements to keep vehicles fit and serviceable.

A PG9 may lead to wider questions such as:

• Are safety inspections frequent enough?
• Are inspections being done to a proper standard?
• Are driver defect reports being completed honestly and reviewed?
• Are repairs being actioned before vehicles return to service?
• Is the transport manager exercising real and continuous management?
• Are trailers under the same level of control as units?
• Do the records support what the operator says happened?

Repeated prohibitions are especially risky. They can suggest a pattern rather than a one-off failure. Even where the individual defects differ, the common issue may be weak roadworthiness systems.

Poor records make that worse. An operator who says a defect developed suddenly may still struggle if there is no signed evidence of recent inspections, no proof of rectification of earlier advisory items, or no driver report showing a proper pre-use check.

For restricted, standard national and standard international licences, the expectations differ in scope, but the core roadworthiness duty remains. For PSV operators, the same management control principles apply, with obvious public safety implications.

The Traffic Commissioner may look at maintenance documentation, inspection intervals, brake testing, contractor control, transport manager involvement, and whether undertakings on the licence are actually being met. Questions can also arise through VOL records, OCRS related enforcement history, and follow-up contact from DVSA.

A prohibition can also intersect with other compliance areas. If the driver involved did not report obvious defects, you may need to review licence checking with DVLA, Driver CPC status, DQC validity, and whether agency or relief drivers were properly inducted into defect reporting procedures.

Where fleets are integrating systems, some operators also want their compliance platform to connect with other tools through a REST API or webhooks, for example to tie maintenance events to operational systems or third-party reporting. That does not replace management control, but it can reduce the record gaps that become painful after enforcement action. We cover that broader approach on our developers and integration page.

What records you should keep after a PG9

After a prohibition, keep a complete file. Assume you may need to show it later to DVSA, the Traffic Commissioner, your maintenance provider, your insurer, or your own auditors.

At minimum, retain:

• the PG9 notice itself
• any DVSA inspection report or prohibition explanation
• photographs of the defect and vehicle or trailer condition
• driver statement or incident note
• transport manager review note
• workshop job card
• repair invoice
• technician’s rectification report
• parts fitted record, where relevant
• brake test printout or measured result, where relevant
• wheel torque or wheel security evidence, where relevant
• tyre replacement record, where relevant
• recovery records, if the vehicle was recovered
• load transfer or service disruption records, if applicable
• the last driver defect report before the prohibition
• the last nil-defect report, if one was submitted
• the most recent safety inspection sheet
• evidence of any previous related defects and repairs
• prohibition clearance evidence, where required
• internal investigation notes
• corrective action record
• evidence of any driver retraining or workshop feedback
• evidence of any fleet-wide checks triggered by the event

The documents should be legible, dated and attributable to named people. Where signatures are used, they should be present. Where digital sign-off is used, the audit trail should show who completed what and when.

This is also the point to make sure related core records are current across the fleet, not just for the prohibited vehicle. That includes MOT or annual-test dates, inspection schedules, driver licence checks with DVLA, Driver CPC and DQC records, insurance checks through askMID where relevant, and policy consistency with data from the Motor Insurers' Bureau or MIB if insurance status questions arise. If the event exposed a broader weakness, check every similar vehicle or trailer, not just the one that was stopped.

For mixed fleets and specialist operators, your file may also need supporting operational evidence, such as depot defect reporting instructions, contractor service level agreements, or trailer allocation logs by ISO week if that is how your inspection planning is controlled.

A PG9 is never just a workshop matter. It is a test of whether your operation can show safe control before the stop, decisive action at the time, and proper management afterwards. If your records can show the defect, the repair, the verification and the corrective action clearly, you are in a far stronger position than an operator trying to reconstruct events months later from scattered paperwork.

That is exactly why we built Operator Compliance at Fleeta Limited around the working needs of licensed operators. We run under an operator licence ourselves, so our focus is not abstract software theory. It is keeping the evidence straight, the deadlines visible, and the Traffic Commissioner file ready when roadworthiness systems come under scrutiny.

Is a PG9 the same as a fine?

No. A PG9 is a prohibition notice, not a fine. It restricts use of a vehicle or trailer because of defects or safety concerns. Other enforcement action may also follow, depending on the case.

Can you drive a vehicle after a PG9 is issued?

Usually not if the prohibition is immediate. If it is delayed, the vehicle may still be used only within the terms of that notice until the prohibition takes effect.

Can a trailer receive a PG9?

Yes. DVSA can prohibit a trailer as well as a powered vehicle if defects are serious enough to affect roadworthiness or safety.

Does one PG9 mean a public inquiry?

Not by itself in every case. But a PG9 can become important if it shows weak maintenance control, repeated defects or poor record keeping across the fleet.

What evidence should a transport manager keep after a PG9?

Keep the prohibition details, defect reports, workshop job sheets, repair invoices, inspection records, release evidence and notes of any internal review or corrective action.