Review of the available common-corridor information.

Site visit for physical and electrical parameter chartacterization.

Compile events table of location-dependent system characteristics.

Develop computer model of the common corridor.

Calculate steady state induced voltage along relevant rail-system conductors.

• Evaluate personnel safety issues
• Vary modeled parameters over likely range
• Evaluate effect of power system range of unbalance

Systematic evaluation of location dependent rail-system unbalance on
signal-equipment compatibility.

Systematic evaluation of fault location on:

• Firing of track lightning arresters,
• Current through fired arresters, and
• Rail-soil touch potential.

Identify need for mitigation measures and candidate approaches.

Evaluation of candidate mitigation effectiveness and needed extent by
iterative analysis for:

• Steady-state compatibility issues
• Fault-related compatibility issues.

Reporting of functional mitigation design and optimization analysis.

Planning, conduct and analysis of post-installation verification tests.

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