Collision avoidance system

Nissan Leaf approaching a movable target performing an Autonomous Emergency Braking (AEB) test. The vehicle has AEB Pedestrian, AEB Cyclist, AEB City, and AEB Interurban as standard in 2018.[1]
Schematic of a 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.[2] In its basic form, a forward collision warning system monitors a vehicle's speed, the speed of the vehicle in front of it, and the distance between the vehicles, so that it can provide a warning to the driver if the vehicles get too close, potentially helping to avoid a crash.[3] Various technologies and sensors that are used include radar (all-weather) and sometimes laser (LIDAR) and cameras (employing image recognition) to detect an imminent crash. GPS sensors can detect fixed dangers such as approaching stop signs through a location database.[2][4][5][6] Pedestrian detection can also be a feature of these types of systems.

Collision avoidance systems range from widespread systems mandatory in some countries, such as autonomous emergency braking (AEB) in the EU, agreements between carmakers and safety officials to make crash avoidance systems eventually standard, such as in the United States,[7] to research projects including some manufacturer specific devices.[citation needed]

  1. ^ Nissan Leaf 2018 Euro NCAP rating
  2. ^ a b Lim, Hazel Si Min; Taeihagh, Araz (2019). "Algorithmic Decision-Making in AVs: Understanding Ethical and Technical Concerns for Smart Cities". Sustainability. 11 (20): 5791. arXiv:1910.13122. doi:10.3390/su11205791.
  3. ^ "What is a forward collision warning system?". safercar.gov. Retrieved 21 February 2020.
  4. ^ Wong, S.Y. (13 February 2008). "Toyota Develops Automatic Brake System Assisted by GPS Technology for Safety Driving". mydigitallife.info. Archived from the original on 6 March 2011. Retrieved 10 April 2020.
  5. ^ "Volvo Collision Warning with Auto Brake". The Volvo Owners Club. 29 August 2007. Retrieved 11 April 2020.
  6. ^ Fuller, John (22 April 2009). "How Pre-Collision Systems Work". HowStuffWorks. Retrieved 21 February 2020.
  7. ^ "Automakers, Safety Officials Make Crash Avoidance Systems Standard by 2022". cars.com. 17 March 2016. Retrieved 21 February 2020.