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. They perceive the environment with sensors and prevent collisions using the data collected from the sensors. Collision avoidance is used in autonomous vehicles, aviation, trains and water transport. Examples of collision avoidance include:
- Airborne collision avoidance systems for aircraft
- Automatic Identification System for collision avoidance in water transport
- Collision avoidance (spacecraft)
- Collision avoidance system in automobiles[1]
- Positive train control
- Tower Crane Anti-Collision Systems
Collison avoidance requires the position of objects in its surroundings and the location of the vehicle relative to their positions.