Pedals have the proper orientation, but shifting becomes a left-handed operation. Even the turn signals and wiper stalks are switched to the other side of the steering wheel. Driving on the other side is by far the biggest adjustment to make. It takes months to be able to signal or wipe the windscreen without thinking which side is which. Once rolling on the correct side of the road things become a bit more familiar.
Roads are mostly of good design and repair.
Australia has a land area equivalent to the lower 48, but has only 16 million people and most of the population resides in the 8 capital cities. As a result, there are vast areas with few people and few roads. There are a few roads of interstate quality forming incomplete links between Melbourne, Sydney, and Canberra, otherwise, it is two lanes. There is not the infrastructure to make cross country motoring the effortless wonder Americans enjoy. Particularly frustrating is the lack of city freeways.