ATC Light Signals
In Flight
steady green
Cleared for landing
flashing green
Return to aerodrome
steady red
Give way to other aircraft and
continue circling.
flashing red
Aerodrome unsafe – do not land.
flashing white
Not applicable.
red and green
Exercise extreme caution.
In Surface Operations^
steady green
Cleared for takeoff.
flashing green
Cleared to taxi.
steady red
Stop
flashing red
Taxi clear of runway in use
flashing white
Return to starting point on
aerodrome
red and green
Exercise extreme caution.