How Many IRTEC-Accredited Technicians Does a Fleet Operator Need?

• There is no fixed legal minimum number of IRTEC-accredited technicians a fleet operator must employ.
• DVSA’s Guide to Maintaining Roadworthiness requires maintenance to be carried out by “suitably qualified” staff, and points operators towards IRTE Workshop Accreditation as a recognised standard.
• IRTE Workshop Accreditation, the workshop-level scheme, expects every technician to either hold an IRTEC licence or be on a documented training plan working towards one.
• Traffic Commissioners assess coverage against fleet size and inspection workload, not a headcount formula.
• The safest approach is enough accredited coverage to keep inspections running without relying on a single individual.

Operators asking this question are usually trying to answer a more specific worry: am I exposed if a Traffic Commissioner or a DVSA examiner asks me to prove my workshop is competent? It is a fair question, and a common one, but it does not have a single-number answer.

Why there is no official minimum

Neither the Guide to Maintaining Roadworthiness nor DVSA’s operator licensing guidance sets out a ratio of technicians to vehicles, or a minimum headcount of IRTEC-accredited staff. The relevant wording in the Guide requires maintenance work to be carried out by staff who are “suitably qualified”, which is deliberately non-prescriptive. That gives operators flexibility to structure their workshop around their own fleet size and maintenance model, but it also shifts the burden onto the operator to demonstrate that whatever arrangement they have chosen is actually adequate.

Where the Guide does get specific is in pointing operators towards formal recognised standards, naming IRTE Workshop Accreditation directly as a scheme operators should be aware of when evidencing technician competence.

What IRTE Workshop Accreditation actually requires

This is the closest thing to an official benchmark, and it is worth understanding in detail because it is what an auditor will actually check. IRTE Workshop Accreditation assesses a workshop across several areas: premises and equipment, technical and clerical staff, management, documentation, and quality and appearance.

On staffing specifically, the requirement is not a fixed number but a coverage principle: every technician carrying out relevant work should either already hold an IRTEC licence, or the workshop should have a documented training plan showing how they are working towards one. In other words, the expectation trends towards full coverage over time, achieved progressively rather than all at once.

What Traffic Commissioners look for

At a public inquiry, or when reviewing an operator following DVSA enforcement action, Traffic Commissioners are not working from a staffing ratio either. They are assessing whether the maintenance evidence in front of them is credible given the size and nature of the fleet. A sixty-vehicle operation relying on a single technician with no formal accreditation invites a different level of scrutiny than a five-vehicle operator with one experienced, accredited technician and a reliable subcontracted backup.

Continuity matters as much as headcount. If your only accredited technician is on holiday, off sick, or leaves the business, can inspections still be signed off to standard? That question comes up repeatedly in compliance reviews, and “no” is a difficult answer to give at a public inquiry.

A practical way to think about it

Rather than searching for a number, four questions get closer to what actually matters:

• Can every safety inspection be signed off by someone who holds, or is actively working towards, an appropriate IRTEC licence?
• Is there redundancy if your most experienced technician is unavailable?
• Does your inspection frequency and fleet size mean one person can realistically keep up without corners being cut?
• If audited under IRTE Workshop Accreditation tomorrow, could you evidence a licence or a training plan for every relevant technician?

If you cannot answer yes to all four, that is the signal to invest, not in a specific headcount, but in genuine, evidenced capability.

The bottom line

There is no fixed number of IRTEC-accredited technicians a fleet operator is legally required to employ. What matters is whether your accredited coverage is realistic for your fleet size, resilient to absence, and evidenced in a way that satisfies DVSA and, if it comes to it, a Traffic Commissioner. IRTE Workshop Accreditation is the closest external benchmark available, and it expects every technician to be licensed or clearly on the way to it.