diff --git a/src/AcDream.Core/World/SceneryGenerator.cs b/src/AcDream.Core/World/SceneryGenerator.cs
index af0be17..8e13667 100644
--- a/src/AcDream.Core/World/SceneryGenerator.cs
+++ b/src/AcDream.Core/World/SceneryGenerator.cs
@@ -100,10 +100,14 @@ public static class SceneryGenerator
                 uint terrainType = (uint)((raw >> 2) & 0x1F);   // bits 2-6
                 uint sceneType = (uint)((raw >> 11) & 0x1F);    // bits 11-15
 
-                // NOTE: retail does NOT skip based on this vertex's road bit.
-                // The road test happens AFTER displacement via the 4-corner
-                // polygonal OnRoad check (see below). Removing the
-                // pre-displacement early-exit restores retail behavior.
+                // ACME-conformant per-vertex road check (GameScene.cs:1074).
+                // If this vertex itself is a road vertex, skip ALL scenery
+                // generation for it. This is retail behavior — the earlier
+                // claim that retail doesn't have this check (commit 833d167)
+                // was wrong. The post-displacement OnRoad check below is
+                // independent and still applies for non-road vertices whose
+                // displaced position lands on the road ribbon.
+                if ((raw & 0x3) != 0) continue;
 
                 if (terrainType >= region.TerrainInfo.TerrainTypes.Count) continue;
                 var sceneTypeList = region.TerrainInfo.TerrainTypes[(int)terrainType].SceneTypes;
@@ -300,6 +304,10 @@ public static class SceneryGenerator
                 int i = x * VerticesPerSide + y;
                 ushort raw = block.Terrain[i];
 
+                // ACME-conformant per-vertex road check (GameScene.cs:1074).
+                // Skip the entire vertex if its road bit is set.
+                if ((raw & 0x3) != 0) continue;
+
                 uint terrainType = (uint)((raw >> 2) & 0x1F);
                 uint sceneType   = (uint)((raw >> 11) & 0x1F);