Metrolinx Technical Standards
- Metrolinx Technical Standards
- Engineering & Architectural Standards
- Systems Engineering Assurance
- Preliminary System Definition PD
PRELIMINARY SYSTEM DEFINITION PD
The Preliminary System Definition captures the high-level scope of the project and determines if the project is considered a significant change as per the Canadian Method for Risk Evaluation and Assessment for Railway Systems (CMREA). The significance decision and justification is documented as part of the Preliminary System Definition.