Independent verification and validation

The concept of independent verification and validation (IV&V) has become increasingly common in railway system development projects over recent years. The basic principles of IV&V involve the establishment of an independent body or institution, the role of which is to provide assurance that a system meets predefined requirements and aims. This is achieved through the adoption of a structured process and formal certification. The key project lifecycle benefits of using an IV&V approach typically include: (1) increases ability to deliver a cost effective system in line with international standards for performance, safety, reliability and functionality. (2) Identifies and closes potential gaps in the specifications at the early design stages. (3) Ensures consistent and regular check back to the system concepts to minimise change from initial specifications. (4) Provides assurance to stakeholders, bankers, regulatory bodies, etc. that the project is being managed professionally through the life cycle. (5) Confirmation at each lifecycle stage of the project that the system is being developed as specified and as required. Adopting an IV&V approach does introduce some challenges for the project - it has to demonstrate good practice and alignment with the defined objectives. It also requires that demonstration throughout the project lifecycle, requiring vigilance, accuracy and good practice. The knowledge that performance can be tested by a third party often focuses attention both on delivering improvements and achieving a strong performance. The underlying process of IV&V allows that performance to be demonstrated externally to stakeholders, regulatory authorities and customers. It ultimately contributes to the overall management of corporate risk and the provision of a safe, reliable and sustainable railway service.