Hello everyone,
This gazebo environment is very great for autonomous testing. I would like to know how to adopt this code to ROS. It doesn't send any topic and I failed to use roslaunch it to launch it. The other question is how I can change the initial pose, the number and the speed of vehicles in the environment.

Thank you

Hello, ${Qt5Test_LIBRARIES} is needed in CMakeLists.txt, or the gazebo_ros cannot load libTrafficLightsGUIPlugin.

  target_link_libraries(${guiSrc}
                        ${GAZEBO_LIBRARIES}
                        ${Qt5Core_LIBRARIES}
                        ${Qt5Widgets_LIBRARIES} 
                        ${Qt5Test_LIBRARIES}
                        ${GAZEBO_LIBRARIES}
  )