Inside diabetes – what it does and how it happens
Learn more about what's really going on in your body when you have Type 2 diabetes
If you drive a car, this should help you work out what, if anything, you need to tell the DVLA about. If you drive a bus or lorry (Group 2 licences), visit the DVLA directly for advice specifically for you.
It can be a bit of a pain to have to check regularly whether you’re okay to carry on driving, but bear in mind that these laws are designed not only to keep YOU safe, but other road users too.
The main thing if you have diabetes and want to drive, is to keep an eye on your blood glucose level. If it’s 4mmol/L or less, don’t drive. Very low blood glucose can start to make you unsafe behind the wheel: physical symptoms of a hypo can make you shaky and sweaty, and less able to control the car; mental symptoms of a hypo can make you confused and less able to make good decisions or react quickly.
Low blood glucose is more likely to affect you if you have Type 1 diabetes, if you take insulin, or if you take certain medications that lower your blood glucose: these include sulphonylureas and glinides. However, that doesn’t mean that if you have Type 2 diabetes you are totally immune from hypos.
Diabetes UK says that many of the accidents caused by hypoglycaemia are because drivers have continued to drive, ignoring their hypo warning signs (e.g. hunger, sweating, feeling faint). If you have a hypo whilst driving: