Hi Aaron,
Welcome to the InfraWorks forum. Thanks for reaching out to the forum. Currently, there are no specific Australian standards available for this version. This idea has been noted and combined into a post you can find here: Country Kit is really a content pack?. I highly recommend voting and adding your support to this idea, as votes on an idea will increase the likelihood that the idea will be implemented.
In the meantime, you might find it helpful to explore this Autodesk University class on creating your own design standards file for road design: InfraWorks: Create Your Own Company Kit.
Please let us know if you require further assistance.
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