Within the wider OSM ecosystem, there are tools people have built to try and compare and flag differences, but I note that you can't just assume that OSM is wrong and a particular government dataset is correct if there are differences, so each case should be addressed on a case by case basis.

OSM tends to follow the on the ground rule and maps based on signage. All datasets may contain errors or may be outdated, including OSM and government published data.

It wouldn't be that hard to build a tool to compare road names from OSM to Main Roads WA.