10 things that can trigger a Public Inquiry

By Zed Aziz, Transport Consultant

A Public Inquiry (PI) is a formal hearing held by the Traffic Commissioner to investigate whether an operator is still fit to hold an Operator Licence. The consequences can be severe — up to and including revocation, curtailment or disqualification. The good news? Most compliance failures do not lead straight to a PI. They pass through stages of assessment and remediation first.

An S-marked prohibition, for example, might trigger a Maintenance Investigation Visit Report (MIVR) or a Desk Based Assessment. If those come back unsatisfactory, the matter escalates. Different issues travel different routes, but when transport safety is at stake, all roads can eventually lead to the Traffic Commissioner's table.

1. Maintenance failures

This is the single most common route to a PI. Weak driver walkaround checks, failure to rectify defects, an unsatisfactory MIVR, lapsed Preventative Maintenance Inspections (PMIs) and serious or repeated MOT failures all point to a maintenance system the Commissioner cannot trust. The defect reporting and rectification trail — the "golden thread" — is what proves you have control.

2. Drivers' hours and tachograph issues

Persistent breaches of drivers' hours rules, missing rest breaks, or — far worse — manipulating tachograph records are treated extremely seriously. So is letting drivers operate without the correct licence or Driver CPC. Operators are expected to check licences regularly and have a mitigation strategy for drivers carrying six or more points.

3. Operator licensing breaches

Running more vehicles than your licence authorises, or parking and operating from a centre that isn't listed on the Operator Licence, are clear-cut breaches. Both signal a loss of control over the operation and frequently feature in PI call-up letters.

4. Financial standing

Operators must demonstrate adequate financial standing on demand. Falling below the threshold, or failing to evidence it, can trigger a PI. Insolvency or bankruptcy may also lead to a hearing — even a business winding down can find its directors' repute examined, which affects any future application.

5. Adverse audits and assessments

Negative findings from a DVSA or independent compliance audit, or an unsatisfactory Desk Based Assessment, expose systemic weaknesses. These are precisely the documents the Commissioner reaches for when deciding whether to escalate.

6. Legal issues, complaints and serious incidents

Transport-related convictions (tachograph fraud, overloading, smuggling), credible whistle-blower reports and public complaints all carry weight. So do serious accidents — particularly those involving fatalities or injuries — where the Commissioner will probe whether the operator's practices played a part. The remaining triggers round out the picture:

• Health and safety breaches — unsafe loading, hazardous-waste failures or environmental non-compliance.
• Operational management failures — loss of professional competence, a Transport Manager not replaced promptly, or breached undertakings.
• Prohibitions — an S-mark prohibition for a serious mechanical defect, or repeated prohibition notices.
• Poor administration — falsified or missing records, and inadequate staff training.

If you've received an unsatisfactory assessment or a call-up letter, act early. Our team can help you prepare for and respond to a Public Inquiry, rebuild your maintenance systems and present a credible recovery plan — get in touch.