1<additional xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/additional_file.xsd"> 2 3 <variableSpeedSign id="variableSpeedSign_0" lanes="EdgeCenter0_0 EdgeCenter1_0"/> 4 5</additional> 6 7