Based on the analysis to date, the following phasing factors need to be considered:
1. A phased approach is required:
• To minimize disruption to existing operations and future service.
• To ensure integrated planning with the Reference Case infrastructure improvements.
• To build expertise in the conversion process on a portion of a corridor and then proceed incrementally in a logical sequence.
2. Constructability and approval processes need to be carefully mapped out:
• Design and approval would be a lengthy process (3 - 4 years) due to complexity, the need for community engagement on issues like the location of hydro sub-stations, visual impacts and significant field work to identify the infrastructure needs, including the grounding of all metal objects within and adjacent to the right-of-way.
• Design for electrification should be integrated into future projects
• Construction is quicker and cheaper while train volumes and service levels are lower.