Flashing white ICAO - Land at this airport and proceed to apron(this is not a clearance to either land or taxi. Clearances to landand taxi will follow.)FAA - Not applicableSteady green Cleared to landFlashing green Cleared to approach airport, or return tolandSteady red Continue circling, give way to other aircraftFlashing red Airport unsafe, do not landAlternating red and green Exercise extreme cautionBlinking runway aviation lights Vehicles, planes, andpedestrians immediately clear landing area in use