It is not illegal to change lanes in Waterview tunnel regardless of the "do not change lanes" signs and solid white lines.

FireEngine:Successful doesn't equal safe. And your view on the sign that <Does> say "no lane changing"?

 

Either way we'll see if the cops take it and the motorway brake-check at the end of the video any further.

 

Brake-check evidence from dash cams is used for charging drivers, it overrides the old, last car pays for the pile up situation.