docs: @Pure
  	public static double getPreferredLaneWidth() {
  		final Preferences prefs = Preferences.userNodeForPackage(RoadNetworkConstants.class);
  		if (prefs != null) {
  			return prefs.getDouble("LANE_WIDTH", DEFAULT_LANE_WIDTH); //$NON-NLS-1$
  		}
  		return DEFAULT_LANE_WIDTH;
  	}