{
  "status": "PASS",
  "edition": "October 2026",
  "revision": 3,
  "optimization": {
    "baseline": "Revision 2",
    "optimized": "Revision 3",
    "definition": "Unique point intersections per pair of colored line centerlines in the exported SVG, outside all station discs plus a 10-unit margin. Rounded corners sampled at 40 intervals. Includes terminal badge connectors. Crossings beneath bridge casing still count. Coincident overlaps reported separately.",
    "crossings_before": 171,
    "crossings_after": 74,
    "crossings_reduction_percent": 56.73,
    "colored_path_length_before": 124379.6147949711,
    "colored_path_length_after": 120679.17464616247,
    "path_length_reduction_percent": 2.98,
    "station_coordinates_unchanged": true,
    "documented_memberships_unchanged": true,
    "methods": [
      "12-start simulated annealing with 2-opt route-order moves",
      "Protected exclusive-station chains and asset spine",
      "Crossing-aware octilinear path search",
      "Whole-network corridor rerouting",
      "Mixed-integer parallel-lane assignment"
    ],
    "scope": "Heuristic improvement under the retained layout constraints; not a proof of the global minimum number of crossings."
  },
  "line_7_3_first_station": "142R-26",
  "parallel_lane_validation": {
    "route_pairs_with_parallel_overlap_before": 14,
    "route_pairs_with_parallel_overlap_after": 0,
    "moved_route_segments": 11,
    "lane_pitch": 13,
    "minimum_tested_overlap_length": 22,
    "criterion": "Parallel strokes less than 12.95 units apart, for more than 22 units outside their shared station rings.",
    "solver_status": "Optimization terminated successfully. (HiGHS Status 7: Optimal)"
  },
  "remaining_parallel_overlaps_including_terminal_badges": [],
  "station_count": 124,
  "unique_stations": 124,
  "independent_tcm_lines": 28,
  "source_documented_memberships": 229,
  "svg_metadata_memberships": 229,
  "geometrically_verified_memberships": 229,
  "missing_memberships": [],
  "invented_memberships": [],
  "all_line_routes_connected": true,
  "station_label_collisions": [],
  "octilinear_straight_segments": true,
  "curves": "Quadratic corner fillets; geometry checked after sampling each curve at 30 intervals.",
  "general_reference_stations": [
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    "11R-88"
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  "excluded_proposed_edges": 8,
  "super_hubs": {
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    "61R-10": 9,
    "80R-13": 6,
    "82R-13": 11,
    "138R-25": 6
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  "line_counts": {
    "2.3": 2,
    "3.1": 1,
    "3.2": 5,
    "3.3": 9,
    "4.1": 2,
    "5.1": 1,
    "6.1": 1,
    "6.3": 1,
    "6.4": 6,
    "7.1": 12,
    "7.2": 29,
    "7.3": 44,
    "7.4": 4,
    "7.5": 4,
    "7.6": 35,
    "7.7": 3,
    "8.1": 10,
    "9.1": 9,
    "9.2": 13,
    "10.1": 9,
    "10.2": 7,
    "10.3": 11,
    "10.4": 3,
    "11.2": 1,
    "11.3": 1,
    "11.4": 2,
    "11.5": 3,
    "11.6": 1
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  "critical_spot_checks": {
    "28R-03": [
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      "10.4"
    ],
    "39R-06": [
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      "3.2",
      "4.1",
      "7.1",
      "7.2",
      "7.3",
      "7.4",
      "7.5",
      "7.6",
      "7.7",
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    "61R-10": [
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      "7.1",
      "7.2",
      "7.3",
      "7.4",
      "7.5",
      "7.6",
      "7.7",
      "10.3"
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    "75R-13": [
      "7.3",
      "7.6",
      "9.1",
      "10.3"
    ],
    "79R-13": [
      "9.1",
      "9.2",
      "10.1"
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    "80R-13": [
      "7.6",
      "9.1",
      "9.2",
      "10.1",
      "10.2",
      "10.3"
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    "82R-13": [
      "7.1",
      "7.2",
      "7.3",
      "7.4",
      "7.6",
      "8.1",
      "9.1",
      "9.2",
      "10.1",
      "10.2",
      "10.3"
    ],
    "113R-20": [
      "7.6"
    ],
    "133R-23": [
      "3.3",
      "7.6",
      "11.4"
    ],
    "138R-25": [
      "2.3",
      "3.3",
      "5.1",
      "7.3",
      "11.5",
      "11.6"
    ]
  },
  "pdf_all_vector": true,
  "pdf_size_mm": [
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  "png_pixels": [
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  "source_sha256": "d172c14cf406d7d9ded76f1a30d788a85c9bcc5727f36dea98c2e4d984bc3ce3",
  "canonical_incidence_sha256": "4fe7535c67651691dfdc3f29f3c59c2809361dc60aad8582eac89e0053eef330",
  "scope": "Conformance to the supplied audited graph, not independent confirmation of the source RP-TCM mapping.",
  "svg_sha256": "2d4e0a88461d12fa83108b61c585237080080a89eb170d2706523dc22be39301",
  "pdf_sha256": "d790ee6f6564754008d44c7848c6e64a24160ddc45e4c0e5c94b9843a21373b7",
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}