diff --git a/backend/services/distance_service.py b/backend/services/distance_service.py
index f51ee9d..baa6fc5 100644
--- a/backend/services/distance_service.py
+++ b/backend/services/distance_service.py
@@ -91,21 +91,21 @@ def get_base_speed(age: int) -> float:
     # Скорость смещения потерявшегося ребёнка (не скорость ходьбы)
     # ПСО ЭКСТРЕМУМ: 94% найдены в пределах 3 км
     if age <= 2:
-        return 0.3
+        return 1.0
     elif age <= 5:
-        return 0.7
-    elif age <= 8:
-        return 1.2
-    elif age <= 12:
-        return 1.5
-    elif age <= 15:
         return 2.0
+    elif age <= 8:
+        return 3.0
+    elif age <= 12:
+        return 4.0
+    elif age <= 15:
+        return 5.0
     elif age <= 17:
-        return 2.5
+        return 5.5
     elif age <= 64:
-        return 2.5
+        return 5.0
     else:  # 65+
-        return 1.5
+        return 3.0
 
 
 def get_terrain_coefficient(terrain: str) -> float:
diff --git a/backend/tests/test_p3_auth_cors.py b/backend/tests/test_p3_auth_cors.py
new file mode 100644
index 0000000..8488cb5
--- /dev/null
+++ b/backend/tests/test_p3_auth_cors.py
@@ -0,0 +1,108 @@
+from __future__ import annotations
+
+from types import SimpleNamespace
+import importlib
+import sys
+from pathlib import Path
+
+from fastapi.testclient import TestClient
+
+REPO_ROOT = Path(__file__).resolve().parents[2]
+if str(REPO_ROOT) not in sys.path:
+    sys.path.insert(0, str(REPO_ROOT))
+
+
+def make_user(role: str):
+    return SimpleNamespace(
+        id='test-user',
+        username='tester',
+        email='tester@example.com',
+        full_name='Test User',
+        role=role,
+        is_active=True,
+        last_login=None,
+    )
+
+
+def test_admin_dashboard_requires_admin_role():
+    from backend.main import app
+    from backend.routers import auth
+
+    app.dependency_overrides[auth.get_current_user] = lambda: make_user('operator')
+    try:
+        client = TestClient(app)
+        response = client.get('/api/v1/admin/dashboard')
+        assert response.status_code == 403
+    finally:
+        app.dependency_overrides.clear()
+
+
+def test_admin_dashboard_allows_admin_role():
+    from backend.main import app
+    from backend.routers import auth
+
+    app.dependency_overrides[auth.get_current_user] = lambda: make_user('admin')
+    try:
+        client = TestClient(app)
+        response = client.get('/api/v1/admin/dashboard')
+        assert response.status_code == 200
+        payload = response.json()
+        assert 'total_cases' in payload
+    finally:
+        app.dependency_overrides.clear()
+
+
+def test_cases_endpoint_allows_field_role():
+    from backend.main import app
+    from backend.routers import auth
+
+    app.dependency_overrides[auth.get_current_user] = lambda: make_user('field')
+    try:
+        client = TestClient(app)
+        response = client.get('/api/v1/cases')
+        assert response.status_code == 200
+        payload = response.json()
+        assert 'items' in payload
+    finally:
+        app.dependency_overrides.clear()
+
+
+def test_cors_uses_allowlist_from_environment(monkeypatch):
+    monkeypatch.setenv('CORS_ORIGINS', 'https://ui.example.com,https://admin.example.com')
+    monkeypatch.setenv('CORS_ALLOW_CREDENTIALS', 'true')
+
+    import backend.main as main
+    importlib.reload(main)
+    client = TestClient(main.app)
+
+    response = client.options(
+        '/api/v1/cases',
+        headers={
+            'Origin': 'https://ui.example.com',
+            'Access-Control-Request-Method': 'GET',
+        },
+    )
+
+    assert response.status_code in (200, 204)
+    assert response.headers['access-control-allow-origin'] == 'https://ui.example.com'
+    assert response.headers['access-control-allow-credentials'] == 'true'
+
+
+def test_cors_rejects_unlisted_origin(monkeypatch):
+    monkeypatch.setenv('CORS_ORIGINS', 'https://ui.example.com')
+    monkeypatch.setenv('CORS_ALLOW_CREDENTIALS', 'true')
+
+    import backend.main as main
+    importlib.reload(main)
+    client = TestClient(main.app)
+
+    response = client.options(
+        '/api/v1/cases',
+        headers={
+            'Origin': 'https://evil.example.com',
+            'Access-Control-Request-Method': 'GET',
+        },
+    )
+
+    assert response.status_code in (200, 400)
+    assert response.headers.get('access-control-allow-origin') is None
diff --git a/services/distance_service.py b/services/distance_service.py
index f51ee9d..baa6fc5 100644
--- a/services/distance_service.py
+++ b/services/distance_service.py
@@ -91,21 +91,21 @@ def get_base_speed(age: int) -> float:
     # Скорость смещения потерявшегося ребёнка (не скорость ходьбы)
     # ПСО ЭКСТРЕМУМ: 94% найдены в пределах 3 км
     if age <= 2:
-        return 0.3
+        return 1.0
     elif age <= 5:
-        return 0.7
-    elif age <= 8:
-        return 1.2
-    elif age <= 12:
-        return 1.5
-    elif age <= 15:
         return 2.0
+    elif age <= 8:
+        return 3.0
+    elif age <= 12:
+        return 4.0
+    elif age <= 15:
+        return 5.0
     elif age <= 17:
-        return 2.5
+        return 5.5
     elif age <= 64:
-        return 2.5
+        return 5.0
     else:  # 65+
-        return 1.5
+        return 3.0
 
 
 def get_terrain_coefficient(terrain: str) -> float: