Tunnel categoryFlanders

An introduction to the traffic rules and road signs of Flanders. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.

For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.

Traffic signs

Traffic rules

Flanders

1. Tunnel category

A tunnel category is a classification used to determine which vehicles carrying dangerous goods may pass through a road tunnel. Under the ADR system, road tunnels can be classified from category A to category E according to the restrictions imposed on dangerous-goods transport.

Category A has no ADR tunnel restrictions, while categories B, C, D and E impose progressively broader restrictions according to the potential consequences of the dangerous goods being transported. Drivers carrying dangerous goods must compare the tunnel category with the tunnel restriction code applicable to their load.

Does Belgium use ADR tunnel categories?

Yes. Belgian road tunnels can be assigned an ADR category from A to E to determine which dangerous-goods transports may pass through them.

🔗 wegcode.be • Belgium, Ministerial Circular11 January2010 — ADR tunnel categories and C24a panel

🔗 wegcode.be • Belgian current Road Code68.3 — C24a tunnel-category panels

Do all Belgian tunnels have the same ADR category?

No. Tunnel categories depend on the individual tunnel and its safety assessment. Different Belgian tunnels can therefore have different ADR categories and different restrictions on dangerous-goods traffic.

🔗 wegcode.be • Belgium, Ministerial Circular11 January2010 — ADR tunnel categories and C24a panel

🔗 wegcode.be • Belgian current Road Code68.3 — C24a tunnel-category panels