PG9 Prohibition Notice: Remove It and Build an Audit Pack for UK Fleets

PG9 Prohibition Notice: Remove It and Build an Audit Pack for UK Fleets

A PG9 prohibition notice bans a vehicle from public roads until the fault is fixed and formally cleared. It can take effect immediately or come with a short delay window, depending on how dangerous the defect is judged to be. The moment one is issued, the operator’s first job is to secure the vehicle, start a documented investigation, and contact the maintenance provider to book a re-inspection.

TL;DR:

• Most PG9 prohibitions are linked to safety-critical defects in brakes, steering, tyres, suspension, or lighting, which often carry the ‘S’ marker indicating systemic maintenance issues.
• DVSA classifies delayed prohibitions into bands A, B, and C, with non-urgent defects giving between 3 to 10 days for repairs, while immediate prohibitions are issued for defects posing an instant safety risk.
• Correctly recording and promptly addressing a PG9, including proper repairs and re-inspections, is essential to avoid escalation and potential regulatory penalties orLicense revocation.
• Operators should maintain comprehensive, audit-ready records of all inspections, repairs, and legal notices to demonstrate compliance and defend against future enforcement actions.
• Utilizing software like OperatorCompliance can streamline scheduling, document management, and compliance monitoring, helping fleets stay ahead of PG9 risks and regulatory scrutiny.

Table of Contents

• What is a PG9 and who can issue one?
• Immediate versus delayed prohibitions: bands and timeframes
• Which defects trigger a PG9, and what does the ‘S’ marking mean?
• What happens after a PG9: OCRS, the Traffic Commissioner, and public inquiries
• How to remove a PG9: PG10, exemptions, and re-inspection routes
• What to do immediately after a PG9 is issued
• Preventing PG9s: maintenance systems and audit-ready evidence
• A transport manager’s view on handling a PG9
• Stay ahead of PG9 risk with OperatorCompliance
• Sources
• FAQ

What is a PG9 and who can issue one?

A PG9 is the official DVSA form recording a roadworthiness prohibition. Once issued, it is a legal offence to use that vehicle on a public road until the prohibition is lifted, subject to narrow exceptions such as moving it under an exemption to a repair site.

DVSA examiners issue most PG9s, but authorised police officers also carry this power during roadside checks and can act on the same grounds: a defect serious enough to threaten safety or breach construction and use requirements. The Gov sets out how these checks work and what triggers a prohibition rather than a simple advisory notice.

The legal basis sits within road traffic legislation covering vehicle construction, use and roadworthiness, and DVSA’s own operational guidance builds on that framework. The Guide to Maintaining Roadworthiness frames prohibitions as both an enforcement tool and a signal: they tell an operator, in the clearest terms possible, that a maintenance system has let a dangerous vehicle onto the road.

That framing matters because a PG9 is never treated as an isolated paperwork event by the Traffic Commissioner. It gets read as evidence about how well an operator runs its maintenance system generally, not just about one vehicle on one day. Understanding PG9 notice requirements from that angle changes how seriously you should take even a single, apparently minor prohibition.

Drivers cannot simply ignore a notice and carry on to the next drop. The vehicle stays off the road, full stop, until a DVSA-authorised person removes the prohibition or grants a specific exemption to move it.

Immediate versus delayed prohibitions: bands and timeframes

Not every PG9 stops a vehicle in its tracks straight away. DVSA splits prohibitions into immediate (I) and delayed (D) categories, and the difference decides whether a lorry sits at the roadside that night or gets a short window to reach a repair facility.

An immediate prohibition applies when the defect poses a direct risk to safety right now, think a snapped brake pipe or a wheel about to detach. The vehicle cannot move under its own power on a public road until the fault is fixed and inspected. A delayed prohibition covers defects that are serious enough to need fixing but not urgent enough to justify stopping the vehicle on the spot, so the examiner grants a grace period instead.

DVSA groups these delayed timeframes into bands, based on the categorisation of vehicle defects:

• Band A defects typically carry the longest delay window, often up to around 10 days, reflecting lower urgency.
• Band B defects sit in the middle, generally allowing somewhere in the region of 4 to 7 days before the prohibition takes full effect.
• Band C defects are the most urgent of the delayed category, usually giving only up to about 3 days.

Examiners choose the band based on how quickly a defect is likely to deteriorate and how much risk it carries in the meantime, not just how it looks on the day. A delayed prohibition is not fixed in stone either. If circumstances change, an examiner can issue a variation notice, PG9A, which alters the terms of the original prohibition, for example tightening a delayed notice into an immediate one if new information comes to light. Knowing where your fleet’s common defects usually land in this banding system helps transport managers plan repair windows realistically instead of guessing.

Which defects trigger a PG9, and what does the ‘S’ marking mean?

Safety-critical systems dominate the list of PG9-triggering defects. Steering components, brakes, suspension, tyres and lighting account for the overwhelming majority of prohibitions issued at the roadside, largely because faults in these systems are both common and immediately dangerous.

Typical triggers include:

• Brake performance below the required standard, or visible brake system damage.
• Steering play, damaged linkages, or leaking power steering components.
• Tyres below the legal tread depth, with cuts exposing the ply, or mismatched sizes on an axle.
• Suspension components that are cracked, corroded through, or missing entirely.
• Defective lighting that compromises visibility, particularly at night.

Some prohibitions carry an ‘S’ endorsement alongside the defect code. This marking indicates the examiner believes the fault points to a significant failure of the operator’s maintenance systems, not just a one-off mechanical glitch. It is a heavier judgement than the prohibition itself, and it gets reported directly to the Traffic Commissioner as a marker that the whole safety inspection regime may need scrutiny.

Pro Tip: If you receive an ‘S’ marked notice, treat it as an audit trigger, not just a repair job. Pull the vehicle’s full service history immediately, because you will likely need it to demonstrate the failure was isolated rather than systemic.

Inspectors weigh several factors when deciding whether a defect reflects poor maintenance rather than bad luck: how recently the vehicle was inspected, whether the fault should have been caught on a driver’s walkaround check, and whether similar defects have shown up on other vehicles in the fleet. Understanding PG9 compliance rules around the ‘S’ marking specifically is one of the clearest ways to grasp how seriously DVSA and the Traffic Commissioner treat repeat maintenance failures versus genuine one-off breakdowns.

What happens after a PG9: OCRS, the Traffic Commissioner, and public inquiries

Every prohibition gets recorded and feeds into the Operator Compliance Risk Score (OCRS), the system DVSA uses to decide how often a fleet gets stopped and checked in future. A worsening OCRS score means more roadside encounters, which means more chances for further prohibitions, a spiral that is hard to break once it starts.

Operators remain responsible for making sure prohibitions get removed properly or that the vehicle’s registered owner is notified where the operator does not own it outright. The Guide to Maintaining Roadworthiness is explicit that removal inspection results get recorded against the operator who received the original notice, so there is no quietly passing the problem on.

Repeated immediate prohibitions, especially those carrying an ‘S’ endorsement, tend to draw closer attention from the Traffic Commissioner. A single prohibition rarely triggers action on its own, but a pattern does. Traffic Commissioners have the power to call operators to a public inquiry, and the outcomes of those inquiries can range from formal warnings through to licence curtailment, suspension, or in serious cases, revocation.

The decision against Pro Car Transport Ltd illustrates how this plays out in practice: repeated prohibitions and weak maintenance records combined to push the case toward regulatory action against both the operator and the transport manager personally. That last point deserves attention. It is not only the company’s O-licence at risk; a transport manager’s own good repute is examined too, and losing that can end a career, not just cost a business one vehicle’s downtime.

How to remove a PG9: PG10, exemptions, and re-inspection routes

Clearing a PG9 always ends with the same document: a PG10, the official notice confirming the prohibition has been removed. Getting there depends on the type of vehicle and defect involved.

1. Repair the defect properly. This sounds obvious, but examiners will check that the actual fault cited on the PG9 has been fixed, not just patched over. Partial fixes get rejected at re-inspection.
2. Book the correct re-inspection. Vehicles that are due, or overdue, an MOT or annual test when the prohibition is issued will usually need to pass a full test at an authorised testing facility (ATF) before the notice clears, rather than a narrower defect-only check. The MOT testing guide confirms that a pass certificate dated after the PG9 will normally clear it. This means the vehicle must meet every annual test standard on the day, not merely the specific fault the examiner originally flagged.
3. Apply for an exemption if you need to move the vehicle. A PG9B exemption allows limited movement, typically to a nearby repair facility, under tightly defined conditions rather than free use of the road. This is not a workaround; DVSA sets the terms and expects the vehicle to go straight to repair.
4. Keep every piece of paperwork. The MOT pass certificate, the re-inspection report, and the PG10 itself form your evidence trail. Operators should retain this alongside the original PG9 as part of the vehicle’s compliance file, because a Traffic Commissioner review can ask for it months later.

Where an examiner judges that facilities at the roadside are inadequate to properly assess a repair, they can insist on ATF testing rather than accepting an on-the-spot fix, even for defects that would not normally need a full test. That single decision can turn a same-day repair into a multi-day delay, which is exactly why so many operators lean on organised PMI scheduling to avoid ever reaching this point.

What to do immediately after a PG9 is issued

The minutes and hours right after a prohibition lands matter more than most drivers realise. Get the response right and you protect both the vehicle and the operator’s regulatory standing; get it wrong and a fixable defect turns into a bigger compliance headache.

At the roadside, the driver’s job is simple: do not move the vehicle unless a formal exemption has been granted. That includes moving it “just around the corner” to a safer spot, unless the examiner has explicitly authorised that movement.

Capture everything on the spot, because memory fades and paperwork gets misplaced:

• The PG9 reference number and full defect description as written by the examiner.
• Whether an ‘S’ endorsement was applied, and the examiner’s stated reasoning if given verbally.
• Photographs of the defect itself, taken before any repair work begins.
• The examiner’s name, badge number, and the location and time of the stop.
• Contact details for any witnesses present, where relevant.

Back at the depot, the priority shifts to root cause. Was this defect missed on the last PMI? Should it have been caught on the driver’s daily walkaround check? Was there a supplier delay on a repair that had already been flagged? Answering those questions honestly, and recording the answers, is what separates a defensible isolated incident from a pattern a Traffic Commissioner will eventually notice.

Pro Tip: Notify your maintenance provider the same day, not the same week. A prompt, documented handover to the workshop is often the single strongest piece of evidence that your systems reacted properly, rather than sitting idle.

Preventing PG9s: maintenance systems and audit-ready evidence

Most PG9s trace back to something that should have been caught earlier, either on a scheduled safety inspection or during a driver’s daily check. Tightening those two routines does more to reduce prohibition risk than almost anything else an operator can do.

Scheduled PMIs at the correct frequency for the vehicle type and mileage catch developing faults, brake wear, corrosion, suspension play, before they become roadside emergencies. Daily walkaround checks, done properly rather than rubber-stamped, catch the faster-developing issues: a slow tyre leak, a cracked light lens, a loose mirror. Neither replaces the other; both need to happen consistently and need to leave a paper trail.

Practical steps that reduce exposure include:

• Running PMIs on a fixed schedule matched to vehicle usage, not just a rough calendar guess.
• Requiring e-signed defect reports from drivers rather than a paper pad that gets lost.
• Storing every MOT certificate, PG10, and repair invoice in one place, searchable when a Traffic Commissioner query lands.
• Reviewing supplier repair turnaround times against agreed service levels, so a known fault does not sit unrepaired for weeks.

An audit pack built from these records is what turns “we think our maintenance is fine” into proof a Traffic Commissioner can actually check. A compliance platform that automates PMI reminders and logs each inspection removes the guesswork from that process, and keeps the evidence ready before it is ever requested rather than scrambled together afterwards.

A transport manager’s view on handling a PG9

If you have ever stood at the roadside reading a PG9 form, you know the instinct is to fix the fault and move on fast. Resist that. The fault matters, but so does the record you build around it, because