Photo: Nataliya Vaitkevich, Pexels
Yes, you can learn to drive in Canada if you use insulin. Under the national CCMTA standard for non-commercial drivers, the core rules are: do not drive if your blood glucose is below 4.0 mmol/L, test immediately before driving and about every 4 hours while driving, and keep fast-acting sugar in the car. After a low, wait at least 40 minutes after treating it and until your level is at least 5.0 mmol/L. A severe hypoglycemia episode means a 6-month rule applies before you can drive again.
This page covers licensing rules only. Your diabetes team should guide your own glucose targets and treatment.
The insulin rules for a car licence
These figures come from section 7.6.2 of the national standard, as published by RoadSafetyBC.
- Do not drive when your glucose is below 4.0 mmol/L.
- Test immediately before driving and approximately every 4 hours while driving.
- Carry a source of rapidly absorbable glucose.
- Stop driving immediately if you identify or suspect hypoglycemia.
- After treating a low, do not drive until at least 40 minutes have passed and your glucose is at least 5.0 mmol/L.
- Stay under regular medical supervision.
Worked example: a low before a lesson
You test before a practice drive and read 3.6 mmol/L. You cannot drive. You treat the low. Forty minutes later you test again and read 5.4 mmol/L, so you can start the drive. If the second reading had been 4.6 mmol/L, you would wait longer and retest, because the standard needs both the 40 minutes and a level of at least 5.0.
Severe hypoglycemia and hypo unawareness
| Situation | National standard | Testing while driving |
|---|---|---|
| Severe hypoglycemia (or hypoglycemia while sleeping) | No further episode in the past 6 months | Before driving and about every hour |
| Hypoglycemia unawareness in the past year | 3 months since the episode, with your doctor confirming awareness has returned and control is stable | Before driving and about every hour |
| Persistent hypoglycemia unawareness | 3 months since the last hypoglycemia episode, stable control, and steps taken to avoid lows while driving | Before driving and about every hour |
The same 40-minute and 5.0 mmol/L recovery rules apply in each case.
Type 2 diabetes without insulin
- Diet-only or metformin-only treatment is rated as little or no risk of hypoglycemia.
- If you take a drug that can cause lows (an insulin secretagogue such as glyburide) and your glucose is between 2.5 and 4.0 mmol/L, do not drive until at least 45 minutes after effective treatment.
- BC requires drivers to report if they start insulin.
Reassessment in British Columbia
- Insulin users with unstable levels or treatment are reassessed annually until stable.
- Once stable, reassessment is every five years or on the age-related schedule.
- After an unawareness episode, reassessment is in one year.
Telling the licensing office
Declare insulin-treated diabetes on your learner’s licence application. The office may send a medical report form for your doctor. Whether your doctor also has to report you depends on the province; see Does your doctor have to report you? Provinces apply the national standard through their own forms, so ask your licensing office what it needs.
Tips for practice drives
- Keep your meter or CGM reader and glucose where you can reach them without leaving the driver’s seat.
- Tell your supervisor or instructor what a low looks like for you and that you will pull over if one starts.
- Build time to test into the start of every lesson and road test day.
Related guides: Epilepsy and driving in Canada and RoadSafetyBC medical fitness. Back to the hub: Driving with a medical condition or disability in Canada.
Sources
- Government of British Columbia, “Chapter 7: Diabetes”, RoadSafetyBC medical standards (gov.bc.ca)
- Government of British Columbia, “Part 1: Introduction to the medical standards” (gov.bc.ca)