Medical Conditions and Driving: What Drivers Must Tell DVLA - and When

Drivers hide medical conditions for understandable reasons - the licence is the livelihood. But the notification duty is not optional, and the concealment risk lands on the operator too: a driver who drives professionally with a notifiable condition they never declared is a safety risk, an insurance problem, and a conduct issue waiting for a collision to reveal it. The rules themselves are short and worth knowing precisely.

When a condition must be reported

You need to tell DVLA about some medical conditions because they can affect your driving. The triggers:

• your doctor tells you to stop driving for 3 months or more
• your medical condition affects your ability to drive safely and lasts for 3 months or more
• you do not meet the required standards for driving because of your medical condition

In these cases you tell DVLA and send them your licence. And if you have a medical condition that affects your driving and do not voluntarily give up your licence, you must inform DVLA - they will decide whether you can continue holding a driving licence. The decision is DVLA’s, not the driver’s and not the doctor’s alone: the notification duty exists precisely so the licensing authority can apply the medical standards.

Note the shape of the 3-month rule: it catches conditions that are serious and lasting, not the broken wrist that keeps you out of the cab for a fortnight. But “lasting” is about the condition and its effect, and drivers chronically underestimate both - the heart condition being “managed”, the sleep apnoea being “looked at”, the blackouts that happened “only twice”.

The reporting routes differ by licence

For a car or motorcycle licence, you can check and report your condition online. For a bus, lorry or coach licence, you check the A to Z list of conditions and follow the link for your condition to find the relevant form. Vocational drivers face stricter medical standards than car drivers - the D4 medical examination regime sits underneath their entitlement - and the notification machinery reflects that: vocational conditions go through condition-specific forms rather than the simple online checker.

The A to Z list is the reference point: it tells a driver whether their specific condition is notifiable, and how. “I didn’t think it counted” is answerable in two minutes by checking the list - which is exactly what a court or an insurer will note.

What fleets should build around it

The duty is personal to the driver, but the exposure is shared. Practical management:

1. Put the duty in writing. The driver handbook and contract should state plainly: drivers must tell DVLA about notifiable conditions, must tell the company about anything affecting their ability to drive safely, and must stop driving when a doctor says so - with the company’s support, not penalty, for doing it right.
2. Make disclosure safe. Drivers hide conditions from employers they fear will sack them. A policy that treats declared conditions as a managed situation - alternative duties where possible - gets told the truth. One that punishes honesty drives conditions underground, which is where they become dangerous.
3. Watch for the signs. Repeated short-notice absences, hospital appointments never explained, visible deterioration in driving, comments about medication. Managers need a route to have the conversation early and privately.
4. Licence checks include the medical angle. A vocational licence check that shows a revoked or refused medical renewal is a stop-driving conversation that day.
5. Never let scheduling pressure drive the decision. The driver who says “I can get through this week’s runs and then see the doctor” is describing the collision window. The answer is cover, now.

It is also worth saying what notification is not: it is not an automatic loss of licence. DVLA’s decision framework exists to match the medical standards to the condition - many notifiable conditions end in a continued licence, a shorter review period, or a restriction rather than a revocation. The drivers who lose licences in this territory are disproportionately the ones who drove on silently and were found out, not the ones who reported early and worked through the process.

The operator’s wider stake

An operator who knows or ought to know a driver is medically unfit and lets them drive is inside the failure. Beyond the human cost, a serious incident with an undeclared notifiable condition in the file unspools everything: insurance resistance, police investigation, DVSA scrutiny of what the operator knew, and the Traffic Commissioner reading the correspondence. The notification duty is the driver’s; the culture that makes notification safe is the operator’s.

Sources

• Check if a health condition affects your driving - GOV.UK