What is automatic emergency braking?
Reviewed by the Skyview Auto Glass technical team — NWRD-, ASE- and DINITROL-trained technicians · Updated November 2026
Quick answer
Automatic emergency braking applies the brakes when a crash is likely and the driver does not react in time. It uses a forward camera, radar, or both to watch the road ahead. It supports the driver, who stays responsible. On most vehicles it can be switched off, and it may not fire for every hazard.
How automatic emergency braking works
A forward camera behind the windshield, a radar sensor in the front bumper, or both track the vehicle ahead and measure the gap and closing speed. If a collision is likely and the driver has not braked, the system applies the brakes to slow the car or soften the impact. Some systems also brake for a pedestrian or cyclist the camera recognizes.
The system is a backup, not a replacement for the driver. It reacts to what the sensors detect, and it may not fire for a stopped object, an animal, or a hazard the camera does not recognize. The driver still has to watch the road, keep a safe following distance, and brake for normal traffic. See our guide on what ADAS is for the full picture.
Common myths about automatic braking
Automatic braking means you do not have to brake.
It is a backup that steps in if you do not react. The driver still brakes for normal traffic and stays responsible for the car.
Automatic braking stops the car every time.
It tries to slow or avoid a crash, but it may not fire for every hazard, and it depends on a clear sensor view. It is not a guarantee.
When the system may not brake
- When the windshield in front of the camera is dirty, wet, or cracked.
- For a stopped object, an animal, or a hazard the camera does not recognize.
- In heavy rain, snow, fog, or glare that blocks the sensor view.
- Below the activation speed, or above the speed where it is designed to work.
- After a windshield replacement if the camera was not recalibrated.
Can automatic braking be turned off?
On most vehicles, yes, through a button or the driver-assist menu. Many systems switch back on at the next start. Switching it off is usually temporary, and the manual lists the exact control for your vehicle.
More questions about automatic emergency braking
How does automatic emergency braking work?
A forward camera, radar, or both track the gap and closing speed to the car ahead. If a crash is likely and the driver has not braked, the system applies the brakes to slow or avoid the impact.
Can automatic braking be turned off?
On most vehicles, yes, with a button or a driver-assist menu setting. Many systems re-enable at the next start. Check your owner’s manual for the exact control.
Does a windshield replacement affect automatic braking?
When a forward camera behind the glass feeds the system, a replacement shifts its aim and the camera has to be recalibrated. Skyview recalibrates it as part of the job — static calibration takes 30 to 60 minutes, dynamic adds a 15 to 30 minute drive, and some vehicles need both, typically $95 to $300 with a pre-scan and post-scan.
Related guides
More in ADAS cameras and calibration
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