docs: @Pure
  	public static String getPreferredAttributeNameForRoadType() {
  		final Preferences prefs = Preferences.userNodeForPackage(RoadNetworkConstants.class);
  		if (prefs != null) {
  			return prefs.get("ROAD_TYPE_ATTR_NAME", DEFAULT_ATTR_ROAD_TYPE); //$NON-NLS-1$
  		}
  		return DEFAULT_ATTR_ROAD_TYPE;
  	}