• A TR Group Site
  • Help
  • Cart
Driving Tests DT logo small
Driving tests
  • Learner licence
    • Car
    • Motorbike
    • Heavy vehicle
    • Learner Licence Plus
  • Courses
  • Tourist
  • Resources
  • Learn
  • Resources
  • Learner licence
    • Car
    • Motorbike
    • Heavy Vehicle
    • Learner Licence Plus
  • Your courses
    • Enrolled courses
  • View all courses
  • Tourist
  • Resources home
  • iOS application
  • Android application
  • Contact us
  • Terms and conditions
  • Privacy
  • Home
  • /
  • Resources
  • /
  • Driver and operator health
  • / Can you drive with diabetes

Can you drive with diabetes

Diabetes creates some risks with the things you’ll need to do while driving. Knowing them allows you to manage them so that you can continue driving without causing a risk to other road users. If you are a young person about to get your licence, check with your doctor before you start driving as you might need an adjustment in your medication.

Blood sugar

Hyperglycaemia is high blood sugar. The most common three symptoms are excess hunger, excess thirst and increased volume of urination. But the main concerns for driving are that it can make you feel extremely tired which puts you at risk of falling asleep at the wheel, it can give you blurry vision and cataracts and, in extreme cases, it can cause seizures.

You should not drive if you are severely hyperglycaemic.

Hypoglycaemia is low blood sugar. Trying to drive with very low blood sugar is very risky because of the following symptoms:

  • Shakiness and nervousness
  • Impaired judgment
  • Seizures
  • Fatigue
  • Lack of coordination
  • Mild paralysis
  • Amnesia

Low blood sugar levels can dangerously impair your driving.

If you sometimes experience hypoglycaemia without warning signs you need to discuss with your doctor whether it will be safe to drive.

Precautions to take when driving with diabetes

A doctor should be able to give you medication to control your diabetes which will make it possible for you to drive a private car. If you have type 1 diabetes you are generally not allowed to drive a passenger vehicle or heavy vehicle unless NZTA has granted a licence after consultation with a specialist.

Meals and snacks

If you are taking a long journey have a meal at your regular time before starting out and stop while you are driving to have another meal (or substantial snack) at the regular time of your next meal. Don’t delay your mealtimes. Keep snacks in the car’s glove box – foods with instant sugar such as glucose-heavy sweets, plain muesli bars, dried fruit, small cartons of fruit juice, and biscuits. Make sure you change these regularly in summer as the summer heat can degrade them. Take fruit with you.

Check your blood sugar levels

diabetes test

If you start feeling the symptoms of diabetes, stop and check your blood sugar levels. If they are low, take some glucose tablets then eat some food which has easily available carbohydrates and sugars such as fruit or biscuits. Wait until you can feel that the sugar has taken effect before you start driving again – this could take up to an hour. Don’t delay treating your symptoms. The worse your hypoglycaemia gets, the more your judgment is affected. It’s better to act early.

Avoid exertion

If you are stopping to load or unload your vehicle, or if you have to change a tyre or push it, this can trigger a low blood sugar episode. Make sure you eat and give yourself time to recover.

Don’t drink alcohol

Alcohol will have a greater effect on your body if you are hypoglycaemic. Avoid alcohol completely before driving.

When should you stop driving if you have diabetes?

Wait at least an hour after a mild hypoglycaemic episode before you start driving again. Give your body time to absorb sugar from the food you’re giving it and normalise the levels.

If you have a severe hypoglycaemic attack, i.e. one where you need someone else to help, refrain from driving for at least 24 hours. If you have several in a row, you’ll need to see your doctor to determine the underlying cause, and you must not drive before then.

If you have a severe hypoglycaemic episode when you are driving, it’s important you see a specialist before resuming driving, and you will need to wait a month.

Can you get special dispensation to drive, or a licence to drive with diabetes?

You can get a licence with conditions under some circumstances. NZTA will take into consideration the type of licence you hold, how you are controlling your diabetes, your history of attacks, how well you follow your medication and an assessment of how severe your symptoms are.

There’s more information about diabetes at Diabetes New Zealand.

driver training courses
By Darren Cottingham

Darren has written over 3000 articles about driving and vehicles, plus almost 500 vehicle reviews and numerous driving courses. Connect with him on LinkedIn by clicking the name above

‹ Using hypnotherapy to help you pass your driving test
Using a life coach to help you pass your driving test ›
Tagged with: diabetes | Posted in Driver and operator health
  • DisqusDisqus
Recent Resources
  • How do you operate an excavator safely in the rain?
  • The Impact of Weather Conditions on Safe EWP Operation
  • Acoustic Emission Testing for Fibreglass Booms: Why It Matters
  • The Evolution of Gantry Cranes in Modern Manufacturing
  • Understanding Load Capacity and Weight Distribution on EWPs
  • How do you efficiently dig a trench? Tips from the pros
  • How to Choose the Right EWP for Your Project: A Comprehensive Guide
  • Pre-Operational Inspection Checklist for Gantry Crane Operators
  • The Importance of Harness Systems When Working on Boom Lifts
  • Safety Procedures for Working Near Power Lines with EWPs

Licences and Courses

  • Car
  • Motorbike
  • Heavy Vehicles
Car
  • Core
  • Behaviour
  • Parking
  • Emergencies
  • Road position
  • Intersection
  • Theory
  • Signs
Motorbike
  • Bike-specific questions
  • Core
  • Behaviour
  • Parking
  • Emergencies
  • Road position
  • Intersection
  • Theory
  • Signs
Heavy Vehicles
  • Class 2
  • Class 3-5
  • Core
  • Behaviour
  • Parking
  • Emergencies
  • Road position
  • Intersection
  • Theory
  • Signs

Vehicle and workplace training

  • About
  • Resources
DT Driver Training TR Group
About
  • About us
  • Contact us
  • Privacy Policy
  • Terms and Conditions
Resources
  • Homepage
  • Driving Tests Android App
  • Driving Tests iPhone App
  • Getting your learner licence
DT Driver Training TR Group
Copyright 2010-2025 DT Driver Training Ltd, PO Box 12541, Penrose, Auckland, 1642. All rights reserved. Questions and images are used with permission from NZTA; question answers are proprietary.