General Warning: exercise extreme caution
Exercise extreme caution.
Exercise extreme caution
General Warning: Exercise extreme precautions
General Warning: Exercise Extreme Caution.
Exercise extreme caution.
Flashing RED: clear the active runway. Flashing RED AND GREEN: General Warning: Exercise extreme caution.
Cleared to cross
Cleared to cross
clear the active runway
Clear active runway
If your aircraft is on the ground, a steady red light from the control tower light gun means STOP. If you are airborne, a steady red light means to give way to other aircraft, and continue circling.
Ground - Cleared for Takeoff. Air - Cleared to Land.