A Transparent Standard for Rail Emissions

The Rail Emission Model (REM)

Rail emission factors are fragmented. Boundary choices, accounting conventions, and data vintage vary by operator and country, making like-for-like comparison hard.

REM fixes that.

It's a tiered methodology that prioritizes the most specific data available - from operator-level factors down to country and global defaults - with full audit metadata behind every result.

What's inside the white paper:

  • REM's tiered fallback hierarchy and system boundary
  • Well-to-Wheel, location-based methodology explained
  • Audit metadata structure behind every calculation
  • Alignment with ISO 14083 principles

SQUAKE is publishing REM openly — because rail emissions data needs more consistency, scrutiny, and industry alignment.

Three panels showing SQUAKE guides on hotel emissions, travel program benchmarks, and modal shift readiness.
Download the whitepaper
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