diff --git a/Effects/ws30-road-high.eff b/Effects/ws30-road-high.eff
index b2ebc7f6d..ff60a2db6 100644
--- a/Effects/ws30-road-high.eff
+++ b/Effects/ws30-road-high.eff
@@ -2,8 +2,7 @@
 <PropertyList>
 	<name>Effects/ws30-road-high</name>
 	<inherits-from>Effects/ws30-road</inherits-from>
-	<parameters>
-		<speed-factor>1.2</speed-factor>
-		<base-density>3.0</base-density>
+	<parameters n="0">
+		<road-traffic-density n="0">0.8</road-traffic-density>
 	</parameters>
 </PropertyList>
diff --git a/Effects/ws30-road-mid.eff b/Effects/ws30-road-mid.eff
index 5bf054231..0327129bb 100644
--- a/Effects/ws30-road-mid.eff
+++ b/Effects/ws30-road-mid.eff
@@ -2,8 +2,7 @@
 <PropertyList>
 	<name>Effects/ws30-road-mid</name>
 	<inherits-from>Effects/ws30-road</inherits-from>
-	<parameters>
-		<speed-factor>0.8</speed-factor>
-		<base-density>0.25</base-density>
+	<parameters n="0">
+		<road-traffic-density n="0">0.1</road-traffic-density>
 	</parameters>
 </PropertyList>
diff --git a/Effects/ws30-road.eff b/Effects/ws30-road.eff
index 81e235fb0..354b1bfc5 100644
--- a/Effects/ws30-road.eff
+++ b/Effects/ws30-road.eff
@@ -50,7 +50,7 @@
 		<normalmap-enabled>0</normalmap-enabled>
 			<lightmap-color type="vec3d" n="0"> 0.941 0.682 0.086 </lightmap-color>
 			<snow_level><use>/environment/snow-level-m</use></snow_level>
-			<snow_thickness_factor><use>/environment/surface/snow-thickness-factor</use></snow_thickness_factor>
+			<snow_thickness_factor>0</snow_thickness_factor>
 		<road-traffic-enabled><use>/sim/rendering/osm/road-traffic-enabled</use></road-traffic-enabled>
 		<road-traffic-density><use>/sim/rendering/osm/road-traffic-density</use></road-traffic-density>
 		<road-traffic-direction><use>/sim/rendering/osm/road-traffic-direction</use></road-traffic-direction>
@@ -142,7 +142,7 @@
 			   </bin-name>
 		   </render-bin>
 		   <!-- Diffuse texture unit-->
-		   <texture-unit>
+		   <texture-unit n="0">
 			   <unit>0</unit>
 			   <image>
 				   <use>texture[0]/image</use>