Thanks Sats.
 The main work required will be adding  and  to the talk page tag, but I'm thinking a bot could do most of the initial work, since every article within Category:Roads in Australia is within scope. What will need to be done manually is tagging related articles such as Main Roads Western Australia that aren't in that category, and then assessing quality and importance per the AURD assessment scales. (But see next point)
 I've made the necessary code for the  talk page banner, but its a fully protected template, so an admin needs to implement it - I've put an edit protected request on Template talk:WikiProject Australia
 Sure, either category name is fine by me
 The other thing you could do would be to invite anyone who might be interested to take a look. The wikipedians I am (currently in the middle of) inviting are:
  - ACT roads
  - QLD, ACT, NSW
  - VIC
  - SA, WP:HWY/O, but not much recent road related activity
  - QLD, WP:HWY/O
  - TAS, WP:HWY/O
  - VIC
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