HELP❗️

There is no light thing on the top of the screen! I looked at the help area and I built the lay out. But where is the light thing on the top the signal! I am on 7.1 and I cant find the singal on the top of the screen! But I say its the best train set up out there keep it up❗️

WorldPocketMaps about Orient Express: The Train Simulator, v3.0.1