Abstract
Software sometimes safety-critical if it resides in a safety-critical 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.
Highlights
Software has become a dominant part of a promptly growing range of applications and products from all sectors
The results indicated that a sufficient number of software safety requirements are being developed and safety risks are within the acceptable threshold level
This paper addresses the key hazards that are required to mitigate for any safety-critical system
Summary
Software has become a dominant part of a promptly growing range of applications and products from all sectors. In which software interacts with other systems, sensors, devices and with people are called software intensive systems (Navy et al, 1999). Software is often used to implement the functionality of safety systems because it is supposed to be design and handle complex functionality. Critical systems are broadly categorized into three categories. They are Safety-critical computer systems, Mission critical systems and Business critical systems. The failure of safety-critical system may cause injury or death to human beings. The failure of mission critical system may result in the failure of some goal-directed activity. The failure of business critical system may result in the failure of the business
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
