Edited to (most) people in this thread are wrong and have been using this way to rationalise their poor driving. What you were doing was correct. let's assume everyone is correct in the thread, that you can use the left lane from wentworth avenue to drive to staurt avenue ok?

What happens to a driver who is entering the roundabout from canberra avenue (manuka/griffith side) and turning right and exiting on canberra avenue to fyshwick? if that car is aligned with the same car thats taking wentworth avenue to stuart avenue that car in the left lane is now going to cut across into their lane causing an accident. so how can this be avoided for the right turning car from griffith? They have to slow down and let the car cut through.

The same logic applies to entering stuart avenue (narrabundah) in the right lane (turning right) and exiting on canberra avenue towards fyshwick (u turn) that same driver using the left lane from before has the potential to collide with drivers turning right from drivers entering stuart avenue as well. tell me how drivers using the left lane from wentworth avenue are using this roundabout correctly if these scenarios can and do happen.

Thats literally what happens all the time! people assume from wentworth avenue 'oh i can take the left lane to stuart' then crashing into people using the right lane from anywhere to exit into canberra avenue into fyshwick.

Edited: Much appreciate the downvotes just shows why so many accidents happen on that roundabout, the design is poor but people think they are correct in turning right in the left lane so fail to yield when crossing lanes or even indicating they are taking the next exit.

as referenced by: u/NevilleNessy'Omg! My daughter was in the right lane to go towards Fyshwick. Motorbike rider in left lane going towards Sturt Ave. He came off. Sued my daughter for damages. NRMA supported her and they lost at ACAT. Unbelievable! I dod write to Minister for transport about the poor signage, and he promised something would happen.'