Systems Assurance

RSA has experience and capability developing, executing, and reporting on transit related Reliability, Availability, Maintainability, and Safety utilizing both EN 50126 and MIL-SPEC standards.


System Safety Assurance

As the complexity of signal systems has grown over the past 40 years, the need for a complete and thorough evaluation of system safety has also increased. RSA has been performing safety system assurance studies for major transit properties for the past twenty-eight years. We have completed all the necessary analysis and planning including, but not limited to, the following:

  • System Safety Assurance Plans

  • Preliminary Hazard Analysis

  • System and Subsystem Hazard Analysis

  • Fault Tree Analysis


  • Software System Hazard Analysis

  • Operating System Hazard Analysis

  • Interface Hazard Analysis

If you require an analysis at the system or product level, our staff will be able to complete a portion of the complete study. Our approach is quite pragmatic. Our goal is to provide a thorough analysis while minimizing your total cost. We will utilize as much of your existing documentation as possible. We will work closely with you, and perhaps even your customer, to define assurance requirements, and those activities that truly will provide a meaningful program.


System Requirements Traceability

RSA also has extensive experience in requirements traceability and Validation and Verification reporting. Our staff has the experience with both Rolling Stock and Signaling disciplines of engineering, ensuring comprehensive systems assurance work.