Alert signal

Aboard Starfleet vessels and outposts, a series of color-coded, and also generally named, alert signals were issued, usually by the ship's computer or internal communications systems.

Colored alerts

 * Red alert (condition red) - critical situation - Marked by flashing red warning lights and audio alarms.
 * Double red alert
 * Yellow alert (condition yellow) - elevated alert
 * Blue alert (condition blue) - environmental, docking/separation or landing alert
 * Gray mode

General alerts

 * Battle alert
 * Battle stations
 * "Brace for impact"
 * Evacuation alert
 * Fire alert
 * General quarters
 * Intruder alert
 * Perimeter alert
 * Proximity alert
 * Security alert
 * Standby alert
 * Tactical alert

Alarm Signal d'alerte