This Standard AS/RISSB 7450 covers the following aspects of Railway Systems Interoperability. All the rail system circumstances including heavy haul, high speed, suburban systems and rural/grain lines. - Considerations for interoperability of Rolling Stock, Infrastructure, Train Protection and Control systems and Human Resources - Processes for addressing the interoperability of current and future systems, assets or processes - Considerations when implementing any new or changed systems, assets or processes.