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Active Safety

We have developed our radar and vision technologies to make driving easier and safer by monitoring the environment around the vehicle, giving our active safety systems a chance to adjust engine output, steering or braking to avoid a crash.

At Autoliv, it’s not enough to help people survive a collision – we want to help them avoid accidents altogether. This means taking action before accidents occur. Future automotive safety technology will need to recognize potentially dangerous situations before they happen, and then react quickly and intelligently.

Using our leading market position in radar and vision technology, our aim is to provide:

  • early warnings to drivers, so they can take appropriate action;
  • intelligent systems that affect the vehicle’s motion using braking and steering, helping the driver avoid the hazard; and
  • improved restraint systems that combine hazard information with traditional crash sensing methods, in case a collision is unavoidable. 

 

Active Safety Functions:
  Adaptive Cruise Control
Adaptive Cruise Control (ACC) is similar to traditional cruise control in that ACC keeps the vehicle’s pre-set speed automatically. The biggest difference between the two, however, is that ACC can also automatically adjust the vehicle’s speed to keep a pre-set distance from vehicles up ahead. For example, if the vehicle ahead slows down, or if another vehicle comes into the lane, the ACC sends a signal to the engine or brake system to slow down to keep the pre-set distance. When the road is clear again, the ACC will accelerate the vehicle up to both the pre-set speed and distance.

  Queue Assist
Queue Assist takes control of braking and acceleration in slow-moving traffic, making driving more comfortable. Also known as Stop-and-Go, Queue Assist is an Adaptive Cruise Control feature.

  Forward Collision Warning & Braking
By continuously monitoring the area in front of the vehicle, the Forward Collision Warning and Braking system detects slow-moving vehicles or other objects that the driver might hit if not noticed in time. In such cases, the system first alerts the driver with a warning signal. At the same time, the reversible active seatbelt tightens, removing any slack. The brakes are then put into “alert mode,” which makes braking easier by reducing the brake’s activation threshold if the driver steps on the brake pedal. And if the driver still does not react to the warning and a crash is about to happen, full braking power is automatically activated.

  Blind Spot Detection
The Blind Spot Detection feature helps the driver while attempting to pass other vehicles. The system uses two radar sensors that are connected to each side rear-view mirror. The sensors continuously monitor the presence, direction and speed of vehicles in the lanes beside the vehicle. If a vehicle moves into the blind spot, a warning indicator on the appropriate side lights up. If the driver still doesn’t react to the indicator, an audio alarm goes off, providing additional warning.

  Cross-traffic Assist
While backing out of a parking spot, Cross-traffic Assist warns the driver of approaching traffic. Cross-traffic Assist uses the Blind Spot Detection system’s two radar sensors to pick up vehicles moving within a 15-meter (45-foot) range – the size of five parking spaces – from behind or to the left or right of the vehicle.
  Lane Departure Warning
The Lane Departure Warning system checks that the vehicle is in its lane by examining the lane markings on the road. If the driver changes lanes without using the turn indicator, an alert signal warns the driver at speeds of more than 50 km/h. It is also effective while driving through corners and in darkness with the headlights on.

  Road Sign Detection
The Road Sign Detection system reminds drivers of the speed limit and other traffic instructions on the road while driving. A symbol in the shape of a road sign appears on a heads-up display or dashboard, showing different types of information such as the speed limit and when overtaking is and is not allowed. The system also recognizes supplementary signs activated during unique situations – driving in wet conditions, for example – and temporary restrictions such as through road works.

  Light Source Recognition
The Light Source Recognition system ensures that drivers in oncoming vehicles are not accidentally blinded by headlights. It identifies oncoming vehicles from about 750 meters away and determines when headlights need to be “dipped.” Headlights are raised automatically when there is no longer any risk of blinding an oncoming driver. The system works similarly when approaching another vehicle from behind, this time from about 450 meters away. The system will also recognize when the vehicle is being driven in areas with enough light, or if the vehicle speed is less than 30 km/h. During these situations the headlights stay dipped automatically.

  Pedestrian Detection
With the ability to observe and recognize movement patterns in people, the Pedestrian Detection system warns the driver of pedestrians who might step onto the road ahead. The driver first receives an audible and/or visible warning on the dashboard or heads-up display. At the same time the car's brakes are put into “alert mode,” making it easier for the driver to brake quickly. If the driver does not react to the warning and an accident is about to happen, the system automatically applies full braking power.
  Night Vision
The Night Vision system displays an image of the road scene ahead that headlights might not pick up. Using infrared technology the system analyzes the content of the scene while taking the vehicles’ motion into account. If a pedestrian is at risk of being hit, warnings are signaled with enough time for the driver to react. The system can detect pedestrians up to two times farther than the typical headlight range.

 

Availability of Active Safety Systems

​Euro NCAP’s 2012 fitment survey looks at the availability of active safety system on different car models in Europe.