Research Article

Security Requirements Engineering in Safety-Critical Railway Signalling Networks

Table 2

SL vectors of the zones as the result of the analysis.

Zone IAC UC SI DC RDF TRE RA

Z.OC 3 2 4 1 1 3 1
Z.ILS 3 2 4 1 1 3 1
Z.MDM 3 2 4 1 1 3 1