<routes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/routes_file.xsd">
   <route id="always_left" edges="1fi 1si 4o 4fi 4si 2o 2fi 2si 3o 3fi 3si 1o 1fi"/>
   <route id="always_right" edges="3fi 3si 2o 2fi 2si 4o 4fi 4si 1o 1fi 1si 3o 3fi"/>
   <route id="horizontal" edges="2fi 2si 1o 1fi 1si 2o 2fi"/>
   <route id="vertical" edges="3fi 3si 4o 4fi 4si 3o 3fi"/>

   <flow id="always_left" route="always_left" begin="100" end="1110" period="10"/>
   <flow id="always_right" route="always_right" begin="100" end="1110" period="10"/>
   <flow id="horizontal" route="horizontal" begin="100" end="1110" period="10"/>
   <flow id="vertical" route="vertical" begin="100" end="1110" period="10"/>
</routes>
