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  2. Collision avoidance system - Wikipedia

    en.wikipedia.org/wiki/Collision_avoidance_system

    A collision avoidance system (CAS), also known as a pre-crash system, forward collision warning system (FCW), or collision mitigation system, is an advanced driver-assistance system designed to prevent or reduce the severity of a collision.

  3. CBRN defense - Wikipedia

    en.wikipedia.org/wiki/CBRN_defense

    CBRN defense consists of CBRN passive protection, contamination avoidance, and weapons of mass destruction mitigation. A CBRN incident differs from a hazardous material incident in both scope (i.e., CBRN can be a mass casualty situation) and intent.

  4. Kessler syndrome - Wikipedia

    en.wikipedia.org/wiki/Kessler_syndrome

    The Kessler syndrome (also called the Kessler effect, [1] [2] collisional cascading, or ablation cascade ), proposed by NASA scientist Donald J. Kessler in 1978, is a scenario in which the density of objects in low Earth orbit (LEO) due to space pollution is numerous enough that collisions between objects could cause a cascade in which each ...

  5. Terrain awareness and warning system - Wikipedia

    en.wikipedia.org/wiki/Terrain_awareness_and...

    In aviation, a terrain awareness and warning system ( TAWS) is generally an on-board system aimed at preventing unintentional impacts with the ground, termed "controlled flight into terrain" accidents, or CFIT. [1] The specific systems currently in use are the ground proximity warning system (GPWS) and the enhanced ground proximity warning ...

  6. Collision avoidance in transportation - Wikipedia

    en.wikipedia.org/wiki/Collision_avoidance_in...

    In transportation, collision avoidance is the maintenance of systems and practices designed to prevent vehicles (such as aircraft, motor vehicles, ships, cranes and trains) from colliding with each other. Examples include: Airborne collision avoidance systems for aircraft; Automatic Identification System for collision avoidance in water transport

  7. Airborne collision avoidance system - Wikipedia

    en.wikipedia.org/wiki/Airborne_collision...

    An airborne collision avoidance system (ACAS, usually pronounced as ay-kas) operates independently of ground-based equipment and air traffic control in warning pilots of the presence of other aircraft that may present a threat of collision. If the risk of collision is imminent, the system recommends a maneuver that will reduce the risk of ...

  8. Portable collision avoidance system - Wikipedia

    en.wikipedia.org/wiki/Portable_collision...

    A portable collision avoidance system (PCAS) is an aircraft collision avoidance system similar in function to traffic collision avoidance system (TCAS). TCAS is the industry standard for commercial collision avoidance systems but PCAS is gaining recognition as an effective means of collision avoidance for general aviation and is in use the ...

  9. Runway incursion - Wikipedia

    en.wikipedia.org/wiki/Runway_incursion

    Accident: An incursion that resulted in a collision. Category A: A serious incident in which a collision was narrowly avoided. Category B: An incident in which separation decreases and there is a significant potential for collision, which may result in a time critical corrective/evasive response to avoid a collision. Category C

  10. Aviation accidents and incidents - Wikipedia

    en.wikipedia.org/wiki/Aviation_accidents_and...

    An aviation accident is an event during aircraft operation that causes serious injury, death, or destruction; an aviation incident is any operating event that compromises safety but does not progress to an actual accident. Preventing accidents and incidents is the main goal of aviation safety .

  11. Pedestrian crash avoidance mitigation - Wikipedia

    en.wikipedia.org/wiki/Pedestrian_crash_avoidance...

    Pedestrian crash avoidance mitigation (PCAM) systems (USDOT Volpe Center), also known as pedestrian protection or detection systems, use computer and artificial intelligence technology to recognize pedestrians and bicycles in an automobile's path to take action for safety.