چکیده (انگلیسی):

Software sometimes safety-critical if it resides in a safetycritical
computer systems and it causes or contributes to hazards.
Therefore, Safety-critical software intensive systems require verification
and validation to confirm that they function as per the safety
requirements. Software Safety is a combination of many factors. Metrics
are commonly used in engineering as measures for the performance of a
system on a given attribute. This paper presents a methodology for
software safety framework based on Goal-Question-Metric (GQM)
Approach. The proposed methodology was applied to a safety-critical
Railroad Crossing Control System (RCCS) which is a laboratory
prototype. The outcomes of the prototype are satisfactory and observed
that safety risks are within the acceptable threshold level.