<additional xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/additional_file.xsd">

   <e2Detector id="3/1to2/1" lane="3/1to2/1_0" pos="100" length="200" freq="100" file="detector.xml"/>
   <e2Detector id="4/1to3/1" lane="4/1to3/1_0" pos="100" length="200" freq="100" file="detector.xml"/>

</additional>