PG9 Prohibition Notices: What They Are, How to Avoid Them, and What Happens Next

What Is a PG9?

A PG9 prohibition notice is the document a DVSA examiner issues at the roadside (or at your operating centre) when they decide a vehicle is not safe to continue on the road. The "PG" stands for *Prohibition Goods* — though identical notices are issued for PSV and trailers.

In practice, a PG9 means one thing: your vehicle stops moving until the defect is fixed and, in most cases, the prohibition is formally cleared by the DVSA.

Immediate vs Delayed Prohibitions

There are two flavours, and the difference matters for your operation:

A "variation" can be added that prevents the vehicle being driven anywhere except for repair, and an "S-marked" prohibition flags significant operator failure — the kind that lands on the Traffic Commissioner's desk.

What Triggers a PG9?

The most common defects we see flagged in UK roadside checks:

• Tyres below 1mm tread, with cuts, bulges or sidewall damage
• Brake defects — leaks, low air pressure, imbalance, worn pads/linings
• Steering play or component wear
• Lighting — multiple lamps inoperative
• Load security — inadequate restraint or unsafe load distribution
• Suspension — broken springs, leaking air bags
• Exhaust emissions or DPF tampering (a fast track to an S-mark)
• Driver hours / tachograph offences (issued under different powers but often paired with vehicle PG9s)
• Overweight — even minor overloads can attract immediate prohibition

A PG9 isn't only issued at roadside checks. The DVSA also visits operating centres, and during a compliance audit a single dangerous defect found on a vehicle in service can trigger one.

The Real Cost of a PG9

People focus on the recovery and repair bill, but that's the small part. The real damage is:

1. Lost revenue — the vehicle isn't earning while it's off the road
2. Customer impact — a missed delivery damages reputation more than the fine
3. OCRS rating — every PG9 worsens your Operator Compliance Risk Score, which directly increases your chance of future stops
4. Traffic Commissioner attention — a pattern of S-marked prohibitions can lead to a Public Inquiry and curtailment of your O-licence
5. Insurance — repeat enforcement notices feed into premium reviews

How to Stay Off DVSA's Radar

The good news: the operators with the lowest prohibition rates do the same handful of things consistently.

1. Make the daily walkaround check actually mean something

A 30-second tick exercise won't catch a brake leak. Drivers need a structured workflow that takes them around the vehicle in a defined order, with photo evidence for any suspicious item. This is exactly the gap that digital walkaround apps like Zohti close — you get timestamped, geotagged proof that each item was inspected.

2. Close the defect-to-repair loop

Most prohibitions on UK roads relate to defects that had been reported but not actioned. If a driver flags a tyre on Monday and the same tyre fails on Friday, that's a system failure, not a driver failure. Every defect needs an owner, a deadline and a sign-off.

3. Keep PMI intervals tight and evidenced

The DVSA expects safety inspections at intervals appropriate to use — typically 4–6 weeks for HGVs in heavy use. Late inspections without a documented reason are an easy enforcement target.

4. Watch your OCRS

Your OCRS score is visible to DVSA examiners before they decide who to stop. Operators in the green band are stopped far less often. You can request your score and trend through the DVSA portal.

5. Keep records for at least 15 months

If a PG9 is issued and you can't produce the most recent inspection or daily check, expect the matter to escalate. Digital systems automate retention; paper does not.

What to Do if You Get One

1. Don't argue at the roadside. The decision is the examiner's. Note their name and the prohibition reference.
2. Read the notice carefully. Identify which defects are immediate, which are delayed, and what's required to clear each one.
3. Repair to a high standard — a botched repair that fails the clearance check makes the situation worse.
4. Get the prohibition formally cleared. Most PG9s require inspection at an Authorised Testing Facility (ATF) or DVSA test station before the vehicle is released.
5. Conduct a root-cause review. Why was this defect not caught by your own checks? Update your process — and document the change.

How Zohti Helps

Zohti is built around the daily check + defect + PMI cycle that determines whether your fleet ever sees a PG9 in the first place:

• Guided walkaround checks with photo evidence and GPS lock
• Automatic defect tickets routed to the right person, with SLA tracking
• PMI scheduling with email alerts before inspections fall due
• DVSA-ready exports of inspection history, defect status and repair sign-off
• OCRS-friendly evidence base — everything time-stamped and tamper-resistant

Start a free 14-day trial and have your first compliant walkaround check completed today.