{
  "dataset": "Waymo S2-Cell Safety Benchmark -- State Summary (Latest Vintage)",
  "source": "Waymo self-published safety benchmark data (S2-cell level, rolled up to state)",
  "vintage_end": "202606",
  "coverage": "States where Waymo has published S2-cell benchmark data as of this vintage",
  "notes": {
    "waymo_ro_miles": "Waymo-reported revenue/operations miles for this geography",
    "hpms_benchmark_vmt": "FHWA Highway Performance Monitoring System human-driving VMT benchmark for the same geography",
    "benchmark_crash_counts_by_outcome": "Modeled/benchmark human-driving crash counts by outcome category, NOT Waymo's own crash counts.",
    "implied_human_benchmark_rate_per_million_miles": "benchmark_crash_count / hpms_benchmark_vmt * 1e6; human-driving benchmark rate, NOT a Waymo safety rate."
  },
  "state_summary": [
    {
      "state": "California",
      "waymo_ro_miles": 149519112.8,
      "hpms_benchmark_vmt": 12855391133.7,
      "s2_cell_count": 1102,
      "benchmark_crash_counts_by_outcome": {
        "blincoe_any_injury": 22932.47,
        "blincoe": 53470.96,
        "police_reported": 27989.12,
        "observed_any_injury": 15682.11,
        "fatal": 204.06,
        "airbag": 9002.24,
        "ego_airbag": 9002.24,
        "ka": 1476.59
      },
      "implied_human_benchmark_rate_per_million_miles": {
        "blincoe_any_injury": 1.7839,
        "blincoe": 4.1594,
        "police_reported": 2.1772,
        "observed_any_injury": 1.2199,
        "fatal": 0.0159,
        "airbag": 0.7003,
        "ego_airbag": 0.7003,
        "ka": 0.1149
      }
    },
    {
      "state": "Arizona",
      "waymo_ro_miles": 92121323.8,
      "hpms_benchmark_vmt": 7962036402.1,
      "s2_cell_count": 615,
      "benchmark_crash_counts_by_outcome": {
        "blincoe": 91952.56,
        "airbag": 12255.42,
        "blincoe_any_injury": 17373.97,
        "police_reported": 41945.66,
        "fatal": 184.38,
        "ka": 908.49,
        "ego_airbag": 12255.42,
        "observed_any_injury": 11890.49
      },
      "implied_human_benchmark_rate_per_million_miles": {
        "blincoe": 11.5489,
        "airbag": 1.5392,
        "blincoe_any_injury": 2.1821,
        "police_reported": 5.2682,
        "fatal": 0.0232,
        "ka": 0.1141,
        "ego_airbag": 1.5392,
        "observed_any_injury": 1.4934
      }
    },
    {
      "state": "Texas",
      "waymo_ro_miles": 21064489.3,
      "hpms_benchmark_vmt": 2200756116.0,
      "s2_cell_count": 268,
      "benchmark_crash_counts_by_outcome": {
        "ego_airbag": 6615.61,
        "ka": 475.36,
        "fatal": 61.89,
        "blincoe": 28097.54,
        "observed_any_injury": 6591.39,
        "blincoe_any_injury": 9649.99,
        "police_reported": 14025.75,
        "airbag": 6615.61
      },
      "implied_human_benchmark_rate_per_million_miles": {
        "ego_airbag": 3.0061,
        "ka": 0.216,
        "fatal": 0.0281,
        "blincoe": 12.7672,
        "observed_any_injury": 2.9951,
        "blincoe_any_injury": 4.3849,
        "police_reported": 6.3731,
        "airbag": 3.0061
      }
    },
    {
      "state": "Georgia",
      "waymo_ro_miles": 5783708.0,
      "hpms_benchmark_vmt": 1572715857.4,
      "s2_cell_count": 224,
      "benchmark_crash_counts_by_outcome": {
        "ka": 821.64,
        "blincoe_any_injury": 26478.62,
        "airbag": 10992.87,
        "blincoe": 155978.04,
        "police_reported": 70248.74,
        "observed_any_injury": 18060.49,
        "ego_airbag": 10992.87,
        "fatal": 89.49
      },
      "implied_human_benchmark_rate_per_million_miles": {
        "ka": 0.5224,
        "blincoe_any_injury": 16.8362,
        "airbag": 6.9897,
        "blincoe": 99.1775,
        "police_reported": 44.6672,
        "observed_any_injury": 11.4836,
        "ego_airbag": 6.9897,
        "fatal": 0.0569
      }
    }
  ],
  "county_summary": [
    {
      "state": "Arizona",
      "county": "Maricopa",
      "waymo_ro_miles": 92121323.8,
      "hpms_benchmark_vmt": 7962036402.1,
      "s2_cell_count": 615
    },
    {
      "state": "California",
      "county": "San Francisco",
      "waymo_ro_miles": 67907810.8,
      "hpms_benchmark_vmt": 1221030634.7,
      "s2_cell_count": 123
    },
    {
      "state": "California",
      "county": "Los Angeles",
      "waymo_ro_miles": 67097806.2,
      "hpms_benchmark_vmt": 6507241178.9,
      "s2_cell_count": 312
    },
    {
      "state": "Texas",
      "county": "Travis",
      "waymo_ro_miles": 21064489.3,
      "hpms_benchmark_vmt": 2200756116.0,
      "s2_cell_count": 268
    },
    {
      "state": "California",
      "county": "San Mateo",
      "waymo_ro_miles": 7430245.9,
      "hpms_benchmark_vmt": 1509957071.1,
      "s2_cell_count": 286
    },
    {
      "state": "California",
      "county": "Santa Clara",
      "waymo_ro_miles": 7083249.9,
      "hpms_benchmark_vmt": 3617162249.0,
      "s2_cell_count": 381
    },
    {
      "state": "Georgia",
      "county": "Fulton",
      "waymo_ro_miles": 5143399.2,
      "hpms_benchmark_vmt": 1163635676.0,
      "s2_cell_count": 164
    },
    {
      "state": "Georgia",
      "county": "DeKalb",
      "waymo_ro_miles": 640308.8,
      "hpms_benchmark_vmt": 409080181.4,
      "s2_cell_count": 60
    }
  ]
}