diff --git a/source/OpenBveApi/Objects/ObjectTypes/StaticObject.cs b/source/OpenBveApi/Objects/ObjectTypes/StaticObject.cs
index a99c30953..54afb8e98 100644
--- a/source/OpenBveApi/Objects/ObjectTypes/StaticObject.cs
+++ b/source/OpenBveApi/Objects/ObjectTypes/StaticObject.cs
@@ -12,7 +12,7 @@ namespace OpenBveApi.Objects
 	public class StaticObject : UnifiedObject
 	{
 		/// <summary>Whether the object is optimized</summary>
-		private bool isOptimized;
+		public bool Optimized;
 		/// <summary>The mesh of the object</summary>
 		public Mesh Mesh;
 		/// <summary>The starting track position, for static objects only.</summary>
@@ -47,7 +47,7 @@ public StaticObject(HostInterface host)
 				EndingTrackDistance = EndingTrackDistance,
 				Dynamic = Dynamic,
 				Mesh = {Vertices = new VertexTemplate[Mesh.Vertices.Length]},
-				isOptimized = isOptimized
+				Optimized = Optimized
 			};
 			// vertices
 			for (int j = 0; j < Mesh.Vertices.Length; j++)
@@ -89,7 +89,7 @@ public override UnifiedObject Clone()
 				EndingTrackDistance = EndingTrackDistance,
 				Dynamic = Dynamic,
 				Mesh = {Vertices = new VertexTemplate[Mesh.Vertices.Length]},
-				isOptimized = isOptimized
+				Optimized = Optimized
 			};
 			// vertices
 			for (int j = 0; j < Mesh.Vertices.Length; j++)
@@ -136,7 +136,7 @@ public override UnifiedObject Mirror()
 				}
 				mirrorResult.Mesh.Faces[i].Flip();
 			}
-			mirrorResult.isOptimized = isOptimized;
+			mirrorResult.Optimized = Optimized;
 			return mirrorResult;
 		}
 
@@ -589,11 +589,11 @@ public override void CreateObject(Vector3 position, Transformation worldTransfor
 		/// <inheritdoc />
 		public override void OptimizeObject(bool preserveVerticies, int faceThreshold, bool vertexCulling)
 		{
-			if (isOptimized)
+			if (Optimized)
 			{
 				return;
 			}
-			isOptimized = true;
+			Optimized = true;
 			int m = Mesh.Materials.Length;
 			int f = Mesh.Faces.Length;
 			
diff --git a/source/Plugins/Formats.OpenBve/Enums/CSVB3D/CSVB3DKey.cs b/source/Plugins/Formats.OpenBve/Enums/CSVB3D/CSVB3DKey.cs
index 9f63cea2a..78d73e4cb 100644
--- a/source/Plugins/Formats.OpenBve/Enums/CSVB3D/CSVB3DKey.cs
+++ b/source/Plugins/Formats.OpenBve/Enums/CSVB3D/CSVB3DKey.cs
@@ -12,9 +12,15 @@ public enum CSVB3DKey
 		/// <summary>Adds a new 1-sided face</summary>
 		Face,
 		AddFace = Face,
+		/// <summary>Adds a new 1-sided face consisting of triangles</summary>
+		TriFace,
+		AddTriFace = TriFace,
 		/// <summary>Adds a new 2-sided face</summary>
 		Face2,
 		AddFace2 = Face2,
+		/// <summary>Adds a new 2-sided face consisting of triangles</summary>
+		TriFace2,
+		AddTriFace2 = TriFace2,
 		/// <summary>Sets the color of all preceding faces in the MeshBuilder</summary>
 		Color,
 		SetColor = Color,
diff --git a/source/Plugins/Object.CsvB3d/Plugin.NewParser.cs b/source/Plugins/Object.CsvB3d/Plugin.NewParser.cs
index 2de49d0a0..63dac8ca6 100644
--- a/source/Plugins/Object.CsvB3d/Plugin.NewParser.cs
+++ b/source/Plugins/Object.CsvB3d/Plugin.NewParser.cs
@@ -73,6 +73,8 @@ internal static StaticObject ReadObject(string fileName, Encoding textEncoding)
 							currentMeshBuilder.Vertices.Add(subBlock.GetNextVertex(out Vector3 currentNormal));
 							currentNormals.Add(currentNormal);
 							break;
+						case CSVB3DKey.TriFace:
+						case CSVB3DKey.TriFace2:
 						case CSVB3DKey.Face:
 						case CSVB3DKey.Face2:
 							if (subBlock.TryGetNextVertexIndexArray(out int[] faceVertices, Plugin.enabledHacks.BveTsHacks))
@@ -100,6 +102,13 @@ internal static StaticObject ReadObject(string fileName, Encoding textEncoding)
 									(f.Vertices[l - 2], f.Vertices[l - 1]) = (f.Vertices[l - 1], f.Vertices[l - 2]);
 								}
 
+								if (key == CSVB3DKey.TriFace || key == CSVB3DKey.TriFace2)
+								{
+									// if we're using TriFace, assume the exporter has optimised
+									f.Flags |= FaceFlags.Triangles;
+									staticObject.Optimized = true;
+								}
+
 								if (key == CSVB3DKey.Face2)
 								{
 									f.Flags |= FaceFlags.Face2Mask;