AEB, as well as adaptive cruise control, aren't perfect systems and it's important to be wary of their limitations.
Below are some common scenarios where AEB systems may have limited ability. Such as when detecting:
- Motorcycles and other smaller road users
- Vehicles of an unusual shape, for example a boat trailer
- Vehicles in poor visibility conditions, for example, bad weather conditions, strong oncoming light, heavy rain, or snow smoke from other vehicles
The following scenarios aren't an exhaustive list, but are samples of common situations.
Content guide
Cornering - entering and exiting bends
Driving on a different line and coming upon a stationary vehicle
Obstacles and stationary vehicles
Vehicles parked at the roadside
Other vehicles (car) changing lane
Vehicles turning off
Winding stretches of road
The ability of AEB and the adaptive cruise control, if fitted, to detect vehicles on bends is limited. AEB and the distance control assistant may unexpectedly issue warnings or brake your vehicle. The distance monitoring system may also accelerate the vehicle unexpectedly.
The ability of AEB and the adaptive cruise control, if fitted, to detect vehicles driving on a different line or stationary vehicles is limited. AEB and the distance control assistant may unexpectedly issue warnings or brake your vehicle. The distance monitoring system may accelerate the vehicle unexpectedly.
AEB and adaptive cruise control may be too late detecting obstacles or stationary vehicles in front of the detected vehicle. AEB and the distance monitoring system may unexpectedly issue warnings or brake your vehicle. The distance monitoring system may also accelerate the vehicle unexpectedly.
AEB can also unexpectedly issue warnings and brake the vehicle if it detects stationary objects next to your lane. Examples of this are:
- Broken-down vehicles
- Road boundaries, e.g. roadside posts
- Signs
- Bridges
- Traffic islands
- Parked vehicles
AEB and the adaptive cruise control may react to vehicles parked at the roadside. AEB and the adaptive cruise control may unexpectedly issue warnings or brake your vehicle. The distance monitoring system may also accelerate the vehicle unexpectedly.
The ability of AEB and the adaptive cruise control, if fitted, to detect a car pulling into your lane is limited. The distance to the vehicle in front entering your lane may then be too short. AEB and the distance control assistant may unexpectedly issue warnings or brake your vehicle. The distance monitoring system may also accelerate the vehicle unexpectedly.
The ability of AEB and the adaptive cruise control to detect vehicles turning off is limited. AEB and the distance monitoring system may unexpectedly issue warnings or brake your vehicle.
AEB systems may lose track of the vehicle ahead of you when driving along winding stretches of road. As the roads straighten out, AEB will again detect vehicles in front to reactive adaptive cruise and the AEB system.