Driving Regulations
and Obstructive Sleep
Apnoea Syndrome
Exceptional healthcare, personally delivered
What is obstructive sleep apnoea syndrome?
Obstructive sleep apnoea means episodes of stopping breathing
whilst you are sleeping. This may result in excessive and
inappropriate daytime sleepiness. The diagnosis of obstructive sleep
apnoea syndrome is confirmed by symptoms in combination with a
sleep study. The doctor whose care you are under in the respiratory
clinic will let you know if you have obstructive sleep apnoea.
If a diagnosis of sleep apnoea syndrome has been made and
the sleepiness is significant patients may be offered treatment
in the form of a mask and air machine designed to keep the
windpipe clear during sleep. This is called CPAP (Continuous
Positive Airway Pressure). If you are awaiting a trial of CPAP
you should not drive and should inform the DVLA.
What the DVLA says
The DVLA is concerned about sleep apnoea because this
condition often causes sleepiness and it is the DVLA’s job
to prevent unnecessary accidents.
In English law you are responsible for your own vigilance when
driving. Falling asleep at the wheel is a criminal offence
and could lead to a prison sentence. The reason for the
sleepiness makes no difference. The same law applies if you
are sleepy because of ‘normal’ sleep disturbance, for example
caused by a new baby, or if you are sleepy due to a medical
condition. The law assumes that you know when you are sleepy
and therefore that you can choose not to drive when you are
feeling sleepy.
If you have a medical condition which has become worse since
your licence was issued or you develop a new medical condition,
you must inform the Drivers’ Medical Group of your condition as
it may affect your fitness to drive.
This includes ALL sleep problems causing excessive awake
time sleepiness.
‘Failure to do so is a criminal offence and is punishable by
a fine of up to £1000.’
2 Driving Regulations and Obstructive Sleep Apnoea Syndrome
This applies to:
Group 1 (cars)
Driving must cease if the sleep disorder is continuing to cause
excessive awake time sleepiness. Driving will be permitted when
satisfactory control of symptoms is achieved.
Group 2 (lorries, buses, etc)
Driving must cease if the sleep disorder is continuing to cause
excessive awake time sleepiness. Driving will be permitted when
satisfactory control of symptoms is achieved and confirmed by
specialist opinion.
This may appear harsh, but many conditions that lead to an
increased risk of accidents lead to the suspension of driving
licences, such as epilepsy, heart attacks, certain forms of
diabetes, etc.
How do I inform the Drivers’ Medical Group?
You can inform them by post, phone, fax or email:
Drivers’ Medical Group
DVLA
Swansea
SA99 005
Tel: 0870 600 0301 (Monday Friday 8:15 am 4:30 pm)
Fax: 0845 850 0095
email: [email protected]
Please inform them of your name, date of birth, driver no (if
known) and medical condition.
What happens once I have informed the DVLA
that I have sleep apnoea?
First, you will receive a form called SL1. This asks you what your
diagnosis is, the date of your diagnosis, whether your condition
is now controlled and whether you are free of ‘excessive
drowsiness occurring in inappropriate situations’.
Driving Regulations and Obstructive Sleep Apnoea Syndrome 3
It requests details of treatment and whether the condition has
ever caused you to see a specialist, as well as requesting
permission to approach them.
If there is a diagnosis of sleep apnoea syndrome and you cannot
say you are free of ‘excessive drowsiness occurring in inappropriate
situations’ then the licence will be revoked and will not be
returned until successful treatment has begun. If treatment has
already been started successfully then there is no problem.
What happens next?
Following the return of SL1 to the DVLA they will send form SL2
to your specialist consultant or your GP. This asks the doctor
to confirm the diagnosis and treatment and asks whether you
are complying with the treatment, whether there are other
conditions causing sleepiness, whether you continue to
experience ‘irresistible drowsiness in inappropriate situations’ and
finally whether there are any other conditions that might affect
fitness to drive. If the form is returned saying that everything is
satisfactory then the DVLA will allow driving to continue.
What about my insurance company?
In the small print of any car insurance policy there will be a
statement saying that you must inform the company of any
circumstances that might alter the terms of the insurance, often
specifically stating health related issues. A diagnosis of sleep
apnoea syndrome would count as such a circumstance.
If you experience sleepiness because of sleep apnoea, you are
strongly advised to inform your insurance company. Failure to
do so may invalidate your insurance policy.
4 Driving Regulations and Obstructive Sleep Apnoea Syndrome
How to contact us:
North Bristol NHS Trust,
Frenchay Hospital
Bristol BS16 1LE
See your appointment
letter for the number to
phone with any queries
you may have
www.nbt.nhs.uk/respiratory
If you or the individual you are caring for need support reading
this leaflet please ask a member of staff for advice.
© North Bristol NHS Trust. First Published August 2005. This third edition August 2011. Review due August 2013. NBT002289