C1 glossary
Restriction codes explained
Restriction codes are numbers shown against licence categories that can limit or explain how an entitlement applies.
- What are driving licence restriction codes?
- licence codes
- driving licence codes

What it means in plain English
When checking C1 on a driving licence, it is not enough to only spot the letters and numbers. Dates and restriction codes can also matter.
A restriction code can change how an entitlement should be understood, which is why learners should check carefully before making assumptions.
- licence codes
- driving licence codes
Why it matters for C1 learners
This term helps learners understand why the site repeatedly says to check dates and codes before relying on a licence category.
It can also prevent confusion where someone assumes they have full C1 without checking the details.
Common confusion
Restriction codes are not random admin clutter.
They may affect what the entitlement actually allows, so they should not be ignored.
Where you might see this term
- Codes shown in the category table
- Licence checks before booking training
- Older entitlement questions
FAQs
Frequently asked questions
Where do restriction codes appear?
They usually appear on the driving licence category table alongside the relevant category and dates.
Should I ask if I do not understand a code?
Yes. Use the official licence-checking route and mention the code when enquiring if it affects your C1 question.
Related pages
Pages related to Restriction codes
Use these pages to keep moving from the definition into the practical C1 route.
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