Color and
Type of Signal
|
Movement
of Vehicles,
Equipment
and Personnel
|
Aircraft on
the Ground
|
Aircraft
in Flight
|
Steady Green |
Cleared to cross,
proceed or go |
Cleared for takeoff |
Cleared
to land |
Flashing Green |
Not applicable |
Cleared for taxi |
Return for landing
(followed by
steady green) |
Steady Red |
STOP |
STOP |
Give way to
other aircraft and
continue circling |
Flashing Red |
Clear the
taxiway/runway |
Taxi clear of the runway in use |
Airport unsafe,
do not land |
Flashing White |
Return to starting
point on airport |
Return to starting point on airport |
Not applicable |
Alternating Red
and Green |
Exercise
Extreme Caution |
Exercise
Extreme Caution |
Exercise
Extreme Caution |