Automatic braking

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Automatic braking is a technology for automobiles to sense and avoid an imminent collision with another vehicle, person or obstacle by braking without any driver input. Sensors to detect other vehicles or obstacles can include radar, video, infrared, ultrasonic or other technologies. GPS sensors can detect fixed dangers such as approaching the stop signs through a location database.[1][2][3]


Automatic braking by the system after sensing an obstacle can be executed in two modes. In collision avoidance, the collision is avoided by the automatic braking, but the driver will not be warned by this type of system. There is a very good chance of wrongly interpreting the signals, especially in the case of radars or lasers. In a collision mitigation system, the sensors detect the possibility of collision but will not take immediate action. A warning will be sent to the driver in the form of a signal or a voice message. There is a threshold safe distance calculated by the system, and if the driver fails to respond even when the vehicle crosses that region, then only brakes will be applied automatically. Even if there is a mis-interpretation of signals, there is no problem, because the decision to apply brakes is left with the driver and the brakes are applied automatically only in the most emergency situations. Many vehicles are provided with the option of turning on or off the automatic system based on their surroundings. In some automobiles, even though they cannot be completely disabled, they can be limited to warning the driver about a coming obstacle. Even this emergency braking initiates ABS which help the driver to retain the control over vehicle without any skidding. An automatic braking system is only effective if the mode of sensing the obstacles is reliable, or else any kind of false interpretation may cause a lot of damage.

2016 US Agreement[edit]

In March 2016, 20 major auto-makers and the government came together to agree to making automatic-braking standard by 2022.[4] In Europe there was a related agreement about AEB in 2012.[5]

Makers part of agreement:[6]

  • Audi
  • BMW
  • Ford
  • General Motors
  • Honda
  • Hyundai
  • Jaguar Land Rover
  • Kia
  • Maserati
  • Mazda
  • Mercedes-Benz
  • Mitsubishi Motors
  • Nissan
  • Porsche
  • Subaru
  • Tesla Motors Inc.
  • Toyota
  • Volkswagen
  • Volvo Car USA

Safety benefit[edit]

In a study of police-reported crashes, automatic emergency braking was found to reduce the incidence of rear-end crashes by 39 percent.[7]

See also[edit]


  1. ^ Toyota Develops Automatic Brake System Assisted by GPS Technology for Safety Driving.
  2. ^ The Volvo Owners Club: New Collision Warning with Auto Brake helps prevent rear-end collisions.
  3. ^ How Pre-Collision Systems Work. Types of Pre-collision Systems.
  4. ^ Automakers agree to make auto braking a standard by 2022 The private-public agreement could save lives.
  5. ^ Automakers agree to make auto braking a standard by 2022 The private-public agreement could save lives.
  6. ^ Automakers agree to make auto braking a standard by 2022 The private-public agreement could save lives.
  7. ^ Cicchino, Jessica (2016). "Effectiveness of Forward Collision Warning Systems with and without Autonomous Emergency Braking in Reducing Police-Reported Crash Rates". Insurance Institute for Highway Safety. 

External links[edit]