input_additional.add.xml

<?xml version="1.0" encoding="UTF-8"?>

<additional xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/additional_file.xsd">
    <railSignalConstraints id="C">
        <predecessor tripId="t2" tl="H" foes="t1" limit="3"/>
    </railSignalConstraints>
    <railSignalConstraints id="H">
        <predecessor tripId="t1" tl="C" foes="t0" limit="3"/>
    </railSignalConstraints>
    <railSignalConstraints id="A">
        <predecessor tripId="t2" tl="D" foes="tx" limit="3"/>
        <predecessor tripId="t2" tl="D" foes="t0" limit="3"/>
    </railSignalConstraints>
</additional>