diff --git a/README.rst b/README.rst
index b632053..f0599d5 100644
--- a/README.rst
+++ b/README.rst
@@ -146,10 +146,11 @@ Notes
 Changes
 ========
 
-4.0.5, 2022-YY-DD
+4.0.5, 2022-11-08
 -----------------
 - Removed most type coercion in validation.
   Probably more instructive for the user that way.
+- Fixed `Issue 11 <https://gitlab.com/mrcagney/make_gtfs/-/issues/11>`_.
 
 
 4.0.4, 2022-10-19
diff --git a/data/auckland/speed_zones.geojson b/data/auckland/speed_zones.geojson
index e861e18..236e8ff 100644
--- a/data/auckland/speed_zones.geojson
+++ b/data/auckland/speed_zones.geojson
@@ -1,129 +1 @@
-{
-  "type": "FeatureCollection",
-  "features": [
-    {
-      "type": "Feature",
-      "properties": {
-        "speed": 200,
-        "speed_zone_id": "a",
-        "route_type": 3
-      },
-      "geometry": {
-        "type": "Polygon",
-        "coordinates": [
-          [
-            [
-              174.76552963256836,
-              -36.84198795415702
-            ],
-            [
-              174.7753143310547,
-              -36.86671222190732
-            ],
-            [
-              174.78355407714844,
-              -36.858334338156325
-            ],
-            [
-              174.76552963256836,
-              -36.84198795415702
-            ]
-          ]
-        ]
-      }
-    },
-    {
-      "type": "Feature",
-      "properties": {
-        "speed": 100,
-        "speed_zone_id": "b",
-        "route_type": 3
-      },
-      "geometry": {
-        "type": "Polygon",
-        "coordinates": [
-          [
-            [
-              174.76106643676758,
-              -36.84294960290717
-            ],
-            [
-              174.73634719848633,
-              -36.868497553806066
-            ],
-            [
-              174.76982116699216,
-              -36.867261559242756
-            ],
-            [
-              174.76106643676758,
-              -36.84294960290717
-            ]
-          ]
-        ]
-      }
-    },
-    {
-      "type": "Feature",
-      "properties": {
-        "speed": 100,
-        "speed_zone_id": "b",
-        "route_type": 2
-      },
-      "geometry": {
-        "type": "Polygon",
-        "coordinates": [
-          [
-            [
-              174.76106643676758,
-              -36.84294960290717
-            ],
-            [
-              174.73634719848633,
-              -36.868497553806066
-            ],
-            [
-              174.76982116699216,
-              -36.867261559242756
-            ],
-            [
-              174.76106643676758,
-              -36.84294960290717
-            ]
-          ]
-        ]
-      }
-    },
-    {
-      "type": "Feature",
-      "properties": {
-        "speed": 200,
-        "speed_zone_id": "c",
-        "route_type": 2
-      },
-      "geometry": {
-        "type": "Polygon",
-        "coordinates": [
-          [
-            [
-              174.75831985473633,
-              -36.843636487467585
-            ],
-            [
-              174.72707748413083,
-              -36.84913134182603
-            ],
-            [
-              174.73257064819336,
-              -36.86616288062215
-            ],
-            [
-              174.75831985473633,
-              -36.843636487467585
-            ]
-          ]
-        ]
-      }
-    }
-  ]
-}
\ No newline at end of file
+{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"shape_id":"","speed_zone_id":"b","route_type":3,"speed":100},"geometry":{"coordinates":[[[174.76736043357516,-36.84179324765078],[174.7557411745173,-36.85934428591189],[174.77803528270158,-36.87180496532289],[174.79034130103025,-36.85339076851254],[174.76736043357516,-36.84179324765078]]],"type":"Polygon"}},{"type":"Feature","properties":{"shape_id":"","speed_zone_id":"b","route_type":2,"speed":100},"geometry":{"coordinates":[[[174.76736043357516,-36.84179324765078],[174.7557411745173,-36.85934428591189],[174.77803528270158,-36.87180496532289],[174.79034130103025,-36.85339076851254],[174.76736043357516,-36.84179324765078]]],"type":"Polygon"}},{"type":"Feature","properties":{"speed_zone_id":"a","route_type":3,"speed":200},"geometry":{"coordinates":[[[174.74412069842128,-36.84729893247791],[174.73515720368863,-36.84663909049593],[174.74973178543615,-36.860554159183835],[174.7518536704664,-36.8563292730222],[174.74412069842128,-36.84729893247791]]],"type":"Polygon"}}]}
\ No newline at end of file
diff --git a/make_gtfs/main.py b/make_gtfs/main.py
index 782c727..ee57ab2 100644
--- a/make_gtfs/main.py
+++ b/make_gtfs/main.py
@@ -485,7 +485,11 @@ def compute_dists(group):
     for shape_id, group in shapes_g.groupby("shape_id"):
         bd = group.boundary_points.iat[0]
         if bd and not bd.is_empty:
-            for point in bd.geoms:
+            if isinstance(bd, sg.Point):
+                bpoints = [bd]
+            else:
+                bpoints = bd.geoms
+            for point in bpoints:
                 dist = group.geometry.iat[0].project(point)
                 rows.append([shape_id, dist, point])
 
@@ -773,7 +777,9 @@ def build_feed(
     calendar, service_by_window = build_calendar_etc(pfeed)
     routes = build_routes(pfeed)
     shapes = build_shapes(pfeed)
-    stops = build_stops(pfeed, shapes, offset=stop_offset, n=num_stops_per_shape, spacing=stop_spacing)
+    stops = build_stops(
+        pfeed, shapes, offset=stop_offset, n=num_stops_per_shape, spacing=stop_spacing
+    )
     trips = build_trips(pfeed, routes, service_by_window)
     stop_times = build_stop_times(pfeed, routes, shapes, stops, trips, buffer=buffer)
 
diff --git a/notebooks/examples.ipynb b/notebooks/examples.ipynb
index dfc3a24..f7a0b23 100644
--- a/notebooks/examples.ipynb
+++ b/notebooks/examples.ipynb
@@ -120,7 +120,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.7"
+   "version": "3.10.8"
   }
  },
  "nbformat": 4,
diff --git a/tests/test_validators.py b/tests/test_validators.py
index b551cae..107bda9 100644
--- a/tests/test_validators.py
+++ b/tests/test_validators.py
@@ -147,10 +147,11 @@ def test_check_speed_zones():
     with pytest.raises(pa.errors.SchemaError):
         check_speed_zones(pfeed)
 
-    # Check coercion
-    # pfeed = sample.copy()
-    # pfeed.speed_zones["route_type"].iat[0] = 3
-    # assert isinstance(check_speed_zones(pfeed), pd.DataFrame)
+    # Set bad route type
+    pfeed = sample.copy()
+    pfeed.speed_zones["route_type"].iat[0] = "3"
+    with pytest.raises(pa.errors.SchemaError):
+        check_speed_zones(pfeed)
 
     # Make speed zones IDs collide within a route type
     pfeed = sample.copy()