Jase2985:

 

 

 

I dont believe they can enforce the no lane changing in the tunnel with the way the current rules are written, as solid white lines dont prohibit drivers from changing lanes they only discourage them. they only advise against it as it will minimise crashes from lane changes in the tunnel.

 

It's astounding the number of people that don't pick up on it or realise here... (I have fun enlightening the difference) well done. Same reason there are dashed lines at turn offs where you are crossing cycle ways and so on, and cross intersections and solid at lights. Dashed - preferred/safer 'you can change here' area. Solid - silly/not preferred/watch your butt area

It's an enforced indicator in Queensland to stop u-turns, bad merges and so on like our yellows. (opposite use however)

For those following along, check out your next set of lights where dashed line becomes solid into the blocks, or turn off over a cycle lane.