AEB PEDESTRIAN – Autonomous emergency braking

Autonomous emergency braking involving pedestrians

Autonomous emergency braking involving pedestrians

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Objective

The AEB PEDESTRIAN system helps to avoid collisions or minimize their consequences.

How it works

The AEB PEDESTRIAN system is designed to detect imminent danger due to the risk of hitting a pedestrian.

The AEB PEDESTRIAN system acts in two ways:

  1. When there is imminent danger of hitting a pedestrian, this system generally warns the driver via a warning light on the dashboard or windshield and then with an acoustic signal.
  2. If the driver does not heed the warning, the vehicle will apply the emergency braking system to stop the vehicle.

To detect pedestrians, this system has the added functionality of stopping for pedestrians, which is integrated into the AEB URBAN system. In some cases this function also detects cyclists.

Main components

This system works by means of several sensors:

  • Camaras: positioned in the upper area of the windshield.
  • Radar: usually behind the front emblem or in the ventilation grille.
  • Lasers: known as LIDAR, these are placed in the same area as the cameras.

It also uses information from other sources to determine the driver’s status:

  • Accelerator control position sensor.
  • Brake pedal position or circuit pressure sensor.
  • Steering wheel turning angle.
  • ESP control unit.

Together, the camera and radar allow the vehicle to detect that there is a pedestrian a dangerous distance from the vehicle and in the vehicle’s path.

The system informs the driver of the presence of a pedestrian in the path of the vehicle. If the driver is not able to react, the AEB PEDESTRIAN system will autonomously activate the brakes.

Collisions avoided

  • Collisions in urban areas.

Effectiveness

The AEB PEDESTRIAN system reduces road accidents by 58%.

Use and limitations

The AEB PEDESTRIAN system stops functioning in adverse weather conditions or if the sensors are dirty. In this case the system notifies the driver using a warning or message on the dashboard.

Most of these systems recognize pedestrians when they are wearing clothing that is visible and which contrasts with the background.

Cost

The AEB PEDESTRIAN system does not involve any extra costs, as it is usually an additional feature of the AEB system, provided that the vehicle is equipped with this option.

Warning

The AEB system should not be confused with the forward collision warning system (FCW), since that system is limited to warning of collisions and it does not decelerate or brake the vehicle under any circumstances.

Mandatory

This system is mandatory in new approvals from July 2024, although manufacturers are already starting to supply it in their new vehicles.