scope:

This standard provides a set of standard verification tasks for processor-based equipment used in safetycritical applications on rail and transit systems. The scope of this standard shall encompass, and be limited to, processes that verify the level of safety achieved in the implementation of safety-critical functions that are required to be fail-safe. This standard does not address quality assurance or validation processes, which also affect the level of overall system safety achieved.

Figure 1 illustrates the elements of the safety verification process (within the dotted box) in the context of the overall system safety and design and development processes.