Task3/traffic_line_task/launch/traffic_line_task.launch

<launch>
  <!-- The shared camera and base driver must already be running. -->
  <arg name="task_config" default="$(find traffic_line_task)/config/traffic_line_task.yaml"/>
  <arg name="sign_config" default="$(find traffic_sign_recognition)/config/traffic_sign.yaml"/>
  <arg name="line_debug_config" default="$(find line_follower)/config/line_follow_debug.yaml"/>
  <arg name="line_control_config" default="$(find line_follower)/config/line_follow_control.yaml"/>

  <include file="$(find traffic_sign_recognition)/launch/traffic_sign_recognition.launch">
    <arg name="config" value="$(arg sign_config)"/>
    <arg name="enabled" value="false"/>
  </include>

  <include file="$(find line_follower)/launch/line_follow_debug.launch">
    <arg name="config" value="$(arg line_debug_config)"/>
  </include>

  <include file="$(find line_follower)/launch/line_follow_control.launch">
    <arg name="config" value="$(arg line_control_config)"/>
    <arg name="enabled" value="false"/>
  </include>

  <node pkg="traffic_line_task" type="traffic_line_state_machine.py"
        name="traffic_line_task" output="screen">
    <rosparam command="load" file="$(arg task_config)"/>
  </node>
</launch>