Hazardous through the Frejus Tunnel

Whats the story with Hazardous through the Frejus Tunnel? Saw something saying they only let small quantities through but I’m sure I’ve seen tankers and the like being escorted through. Rules on website are in French. I’m loaded with classes 3 & 8

No worries now, got answer from Facebook.

Luke, you will need to stop at the Pompiers or fire brigade checkpoint before you reach the tunnel on the French side, the control is about 20 miles from the tunnel.
You show them the paper work, they may check the truck for ADR kit or your ADR licence to be able to proceed to Frejus. It takes a while, they work out what is on the load, and how it is mixed and so on.
When at Frejus, they park the ADR loads in the parking bay to the right and the van takes them in a group.In the convoy system.