Tunnel restrictions, route rules and national Norwegian provisions
What this domain tests
Tunnel categories, route restrictions and Norwegian national rules. Norway has many long tunnels, so the tunnel code on the transport document is examinable.
Core rules
- ADR tunnel categories A–E: A has no restriction; B restricts goods that may cause a large explosion; C adds a large release of toxic gas; D adds a large fire; E restricts all dangerous goods except small/limited quantities.
- The tunnel restriction code for the goods is in Table A and must be on the transport document. The tunnel sign shows the category.
- Norway designates tunnels and routes nationally; local bans may apply in Oslo, Bergen and other cities. Follow signs and the national tunnel list.
- If a route is prohibited, use the signed alternative; do not enter to save time.
- National provisions can add requirements for escorts, permits or time windows.
Worked example
A vehicle carries 20 t of petrol (Class 3, PG II). Petrol can cause a large fire, so it is restricted in a Category D tunnel. The driver sees the Category D sign at the portal and must not enter. The transport document shows the tunnel code; the driver takes the alternative route. Carrying the same load through a Category B tunnel is allowed because B restricts only large-explosion goods.
Traps
Reading the tunnel sign as a speed limit. Thinking all dangerous goods are banned in every tunnel. Forgetting the tunnel code on the document. Ignoring a local city ban because the ADR tunnel category is lower. Assuming a GPS route is legal for dangerous goods.