hello.edg.xml

<?xml version="1.0" encoding="UTF-8"?>
<edges xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/edges_file.xsd">
    <edge from="1" id="b" to="2">
        <lane index="0" speed="9.90"/>
    </edge>
    <edge from="2" id="c" to="4">
        <lane index="0" speed="23.90"/>
    </edge>
    <edge from="2" id="d" to="3">
        <lane index="0" speed="25.90"/>
    </edge>
    <edge from="4" id="e" to="5">
        <lane index="0" speed="13.90"/>
    </edge>
    <edge from="5" id="f" to="3">
        <lane index="0" speed="13.90"/>
    </edge>
    <edge from="3" id="g" to="7">
        <lane index="0" speed="13.90"/>
    </edge>
    <edge from="7" id="h" to="6">
        <lane index="0" speed="13.90"/>
    </edge>
</edges>