{
  "published": "2026-10-21",
  "sample_papers": 27,
  "question_occurrences": 810,
  "bank_questions": 7020,
  "bank_groups": 715,
  "bank_sha256": "a342702d483bca88a4abbffb43e08380b33c64d8f6329b2a53f6b37f07bf15a9",
  "unmatched_current_statements": 5,
  "unresolved_subgroups": 6,
  "method": "Anonymous aggregate of 27 distinct B-category papers. Current-bank text and figures matched; five historical statements have only reviewed chapter assignments, and one duplicate wording leaves its subgroup unresolved. Observed subgroup counts are a lower bound. Convenience sample, not national probabilities or an official exam blueprint.",
  "sources": [
    "/analysis/patente-b-exam-sample-2026-10.json",
    "/analysis/patente-b-signs-update-2026-10-20.json",
    "/analysis/patente-b-exam-additions-2026-10-21.json"
  ],
  "chapters": [
    {
      "topic": "definizioni-generali-doveri-strada",
      "bank_questions": 516,
      "bank_groups": 50,
      "observed_groups": 22,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "9": 5,
        "10": 1,
        "11": 1,
        "12": 1,
        "14": 7,
        "15": 9,
        "16": 3
      },
      "first_pass_questions": 50,
      "validation_questions": 100
    },
    {
      "topic": "segnali-pericolo",
      "bank_questions": 658,
      "bank_groups": 54,
      "observed_groups": 22,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "2": 1,
        "3": 1,
        "4": 2,
        "5": 1,
        "6": 10,
        "7": 9,
        "8": 3
      },
      "first_pass_questions": 54,
      "validation_questions": 108
    },
    {
      "topic": "segnali-divieto",
      "bank_questions": 497,
      "bank_groups": 44,
      "observed_groups": 19,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "3": 1,
        "4": 1,
        "5": 2,
        "6": 1,
        "7": 10,
        "8": 9,
        "9": 3
      },
      "first_pass_questions": 44,
      "validation_questions": 88
    },
    {
      "topic": "segnali-obbligo",
      "bank_questions": 423,
      "bank_groups": 40,
      "observed_groups": 23,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "10": 5,
        "11": 1,
        "12": 1,
        "13": 1,
        "15": 7,
        "16": 9,
        "17": 3
      },
      "first_pass_questions": 40,
      "validation_questions": 80
    },
    {
      "topic": "segnali-precedenza",
      "bank_questions": 242,
      "bank_groups": 20,
      "observed_groups": 19,
      "questions_per_paper": {
        "2": 27
      },
      "observed_positions": {
        "1": 3,
        "17": 18,
        "18": 1,
        "20": 1,
        "23": 4,
        "24": 26,
        "27": 1
      },
      "first_pass_questions": 20,
      "validation_questions": 40
    },
    {
      "topic": "segnaletica-orizzontale-ostacoli",
      "bank_questions": 257,
      "bank_groups": 30,
      "observed_groups": 20,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "4": 1,
        "5": 1,
        "6": 2,
        "7": 1,
        "8": 10,
        "9": 9,
        "10": 3
      },
      "first_pass_questions": 30,
      "validation_questions": 60
    },
    {
      "topic": "semafori-vigili",
      "bank_questions": 251,
      "bank_groups": 27,
      "observed_groups": 18,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "1": 5,
        "11": 5,
        "12": 1,
        "13": 1,
        "14": 1,
        "16": 7,
        "17": 4,
        "18": 3
      },
      "first_pass_questions": 27,
      "validation_questions": 54
    },
    {
      "topic": "segnali-indicazione",
      "bank_questions": 598,
      "bank_groups": 63,
      "observed_groups": 24,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "2": 1,
        "25": 25,
        "28": 1
      },
      "first_pass_questions": 63,
      "validation_questions": 126
    },
    {
      "topic": "segnali-complementari-cantiere",
      "bank_questions": 178,
      "bank_groups": 19,
      "observed_groups": 17,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "1": 4,
        "2": 2,
        "18": 18,
        "19": 1,
        "21": 1,
        "25": 1
      },
      "first_pass_questions": 19,
      "validation_questions": 38
    },
    {
      "topic": "pannelli-integrativi",
      "bank_questions": 260,
      "bank_groups": 25,
      "observed_groups": 17,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "1": 3,
        "5": 1,
        "6": 1,
        "7": 2,
        "8": 1,
        "9": 7,
        "10": 9,
        "11": 3
      },
      "first_pass_questions": 25,
      "validation_questions": 50
    },
    {
      "topic": "limiti-di-velocita",
      "bank_questions": 251,
      "bank_groups": 20,
      "observed_groups": 14,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "1": 7,
        "2": 5,
        "12": 5,
        "13": 1,
        "14": 1,
        "15": 1,
        "18": 4,
        "19": 3
      },
      "first_pass_questions": 20,
      "validation_questions": 40
    },
    {
      "topic": "distanza-di-sicurezza",
      "bank_questions": 134,
      "bank_groups": 15,
      "observed_groups": 15,
      "questions_per_paper": {
        "2": 27
      },
      "observed_positions": {
        "2": 4,
        "3": 3,
        "19": 18,
        "20": 1,
        "22": 1,
        "26": 26,
        "29": 1
      },
      "first_pass_questions": 15,
      "validation_questions": 30
    },
    {
      "topic": "norme-di-circolazione",
      "bank_questions": 374,
      "bank_groups": 39,
      "observed_groups": 30,
      "questions_per_paper": {
        "2": 27
      },
      "observed_positions": {
        "1": 1,
        "2": 10,
        "3": 5,
        "6": 1,
        "7": 1,
        "8": 2,
        "10": 7,
        "11": 9,
        "12": 3,
        "13": 5,
        "14": 1,
        "15": 1,
        "16": 1,
        "19": 4,
        "20": 3
      },
      "first_pass_questions": 39,
      "validation_questions": 78
    },
    {
      "topic": "precedenza-incroci",
      "bank_questions": 414,
      "bank_groups": 49,
      "observed_groups": 17,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "4": 1,
        "27": 25,
        "30": 1
      },
      "first_pass_questions": 49,
      "validation_questions": 98
    },
    {
      "topic": "sorpasso",
      "bank_questions": 155,
      "bank_groups": 10,
      "observed_groups": 10,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "3": 4,
        "4": 2,
        "20": 18,
        "21": 1,
        "23": 1,
        "27": 1
      },
      "first_pass_questions": 10,
      "validation_questions": 20
    },
    {
      "topic": "fermata-sosta-arresto",
      "bank_questions": 183,
      "bank_groups": 23,
      "observed_groups": 15,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "1": 1,
        "2": 1,
        "3": 3,
        "7": 1,
        "8": 1,
        "9": 1,
        "11": 7,
        "12": 9,
        "13": 3
      },
      "first_pass_questions": 23,
      "validation_questions": 46
    },
    {
      "topic": "norme-varie-autostrade-pannelli",
      "bank_questions": 318,
      "bank_groups": 41,
      "observed_groups": 31,
      "questions_per_paper": {
        "2": 27
      },
      "observed_positions": {
        "1": 1,
        "3": 7,
        "4": 5,
        "5": 1,
        "14": 5,
        "15": 1,
        "16": 1,
        "17": 1,
        "20": 4,
        "21": 3,
        "28": 25
      },
      "first_pass_questions": 41,
      "validation_questions": 82
    },
    {
      "topic": "luci-dispositivi-acustici",
      "bank_questions": 174,
      "bank_groups": 22,
      "observed_groups": 15,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "4": 4,
        "5": 2,
        "21": 18,
        "22": 1,
        "24": 1,
        "28": 1
      },
      "first_pass_questions": 22,
      "validation_questions": 44
    },
    {
      "topic": "cinture-casco-sicurezza",
      "bank_questions": 133,
      "bank_groups": 12,
      "observed_groups": 11,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "2": 1,
        "3": 1,
        "4": 3,
        "8": 1,
        "9": 1,
        "10": 1,
        "12": 7,
        "13": 9,
        "14": 3
      },
      "first_pass_questions": 12,
      "validation_questions": 24
    },
    {
      "topic": "patente-punti-documenti",
      "bank_questions": 208,
      "bank_groups": 18,
      "observed_groups": 15,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "1": 1,
        "4": 7,
        "5": 5,
        "15": 5,
        "16": 1,
        "18": 1,
        "21": 4,
        "22": 3
      },
      "first_pass_questions": 18,
      "validation_questions": 36
    },
    {
      "topic": "incidenti-stradali-comportamenti",
      "bank_questions": 126,
      "bank_groups": 13,
      "observed_groups": 12,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "2": 1,
        "6": 1,
        "29": 25
      },
      "first_pass_questions": 13,
      "validation_questions": 26
    },
    {
      "topic": "alcool-droga-primo-soccorso",
      "bank_questions": 141,
      "bank_groups": 21,
      "observed_groups": 18,
      "questions_per_paper": {
        "2": 27
      },
      "observed_positions": {
        "3": 1,
        "4": 1,
        "5": 7,
        "6": 2,
        "9": 1,
        "10": 1,
        "11": 1,
        "13": 7,
        "14": 9,
        "15": 3,
        "22": 18,
        "23": 1,
        "25": 1,
        "29": 1
      },
      "first_pass_questions": 21,
      "validation_questions": 42
    },
    {
      "topic": "responsabilita-civile-penale-e-assicurazione",
      "bank_questions": 145,
      "bank_groups": 15,
      "observed_groups": 12,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "2": 1,
        "5": 6,
        "6": 3,
        "16": 5,
        "17": 1,
        "22": 4,
        "23": 6,
        "26": 1
      },
      "first_pass_questions": 15,
      "validation_questions": 30
    },
    {
      "topic": "consumi-ambiente-inquinamento",
      "bank_questions": 103,
      "bank_groups": 15,
      "observed_groups": 14,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
        "5": 1,
        "6": 2,
        "7": 1,
        "19": 1,
        "30": 22
      },
      "first_pass_questions": 15,
      "validation_questions": 30
    },
    {
      "topic": "elementi-veicolo-manutenzione-comportamenti",
      "bank_questions": 281,
      "bank_groups": 30,
      "observed_groups": 19,
      "questions_per_paper": {
        "1": 27
      },
      "observed_positions": {
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        "3": 1,
        "6": 4,
        "7": 2,
        "23": 15,
        "30": 4
      },
      "first_pass_questions": 30,
      "validation_questions": 60
    }
  ]
}