agreed, T2 should not be a destination:ref that should be reserved for major routes: state, A, M ect. Although there is keep-left aspect for this maneuver the hov=designation key seems to better address the decision/exit as a whole. Updating tags

https://openstreetcam.org/details/1373330/1212/track-info
https://www.mapillary.com/app/?focus=photo&pKey=ZxKVr_TiLYHwe8wNSOJ0Aw&lat=-27.663763985063554&lng=152.91929787970423&z=17&x=0.48026404748615287&y=0.5237456550596231&zoom=0.30959752321981426

Hello AlexOnTheBus, my name is Lucas. I am making an effort to update destinations on highway signs/ Exit Info. You contributed a group of ref numbers on motorway_junctions between Geelong and Melbourne,I am looking into extending these numbers onto the ways (offramps) with tag 'junction:ref'- from Exit Info best practices OpenStreetMap Wiki. Could you share your source for these exit numbers/ do you have any insight? -Thanks, Lucas