additionals.add.xml

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

    <variableSpeedSign id="variableSpeedSign_0" lanes="EdgeCenter0_0 EdgeCenter1_0" pos="0.00,10.00">

        <!-- valid generic parameter (valid) -->
        <param key="key1" value="value1"/>

        <!-- empty generic parameter (invalid -->
        <param/>

        <!-- missin key (invalid) -->
        <param value="value2"/>

        <!-- empty key (invalid) -->
        <param key="" value="value3"/>

        <!-- key contains invalid characters (invalid) -->
        <param key="$$key with spaces%%" value="value4"/>

        <!-- duplicated key (valid, overwrites the first one, show warning) -->
        <param key="key1" value="value5"/>

        <!-- missing value (invalid, value must exist)-->
        <param key="key2"/>

        <!-- empty value (valid, value may be empty) -->
        <param key="key2" value=""/>

        <!-- value contains invalid characters (valid - no restrictions on value) -->
        <param key="key3" value="$$value with spaces%%"/>

         <!-- valid generic parameter (valid) -->
         <param key="keyFinal" value="valueFinal"/>

    </variableSpeedSign>

</additional>