Figure 22. Graph. Corridor planning within the systems engineering "V" model.

Figure shows the systems engineering "V" model describing a system lifecycle, overlaid with phases applicable to TSMO corridor management:

1. Regional Architecture
2. Needs Assessment and Concept Selection
3. Project Planning
4. Systems Engineering Management Planning
5. Concept of Operations
6. System Requirements
7. High-Level Design / Sub-System Requirements
8. Detailed Design
9. Procurements and Installation
10. Testing
11. Sub-System Verification and Integration
12. System Verification and Integration
13. System Validation and Initial Deployment
14. Operations and Maintenance
15. Changes and Upgrades
16. Retirement / Replacement

Steps 1 through 4 represent the planning steps, steps 5-9 (the descending leg of the "V") represent the development and installation process. Steps 10 through 13 (the ascending leg of the "V") address the testing and validation process. Steps 14 through 16 address the operational phase from deployment to retirement.

• Phase -1: Interfacing with Planning and the Regional Architecture (corresponds to Step 1, above)
• Phase 0: Concept Exploration and Benefits (corresponds to Step 2, above)
• Phase 1: Project Planning and Concept of Operations Development
• Phase 2: System Definition and Design
• Phase 3: System Development and Implementation
• Phase 4: Validation, Operations and Maintenance, Changes & Upgrades
• Phase 5: System Retirement/Replacement