Changing the Game
Saving the Day
EyeSight Comes to the WRX Limited
While you’re tearing down the open road in the 2016 WRX Limited, it’s good to know that Subaru EyeSight1 Driver Assist Technology is quietly working behind the scenes to help keep you safe.
Invisibly, automatically, and almost magically, EyeSight is looking out for you, estimating the distances, doing the math, calculating the probabilities. EyeSight only steps when you really need it with an alert or – if things happen faster than your reaction – an expertly timed application of the brakes. If you don’t already want EyeSight by now, it’s only because you don’t know enough about it.
The Eyes Have It
First introduced in Japan in 2007, Subaru EyeSight is based on two frontward-facing stereo cameras. The cameras, mounted by the rearview mirror on the windshield, can see up to 87 yards ahead – that’s nearly 20 car lengths – with a horizontal range of 25 degrees to both sides of the vehicle. The cameras are linked to vehicle systems controlling key functions, like the throttle, braking, and steering, potentially allowing the vehicle to react to dangerous conditions in milliseconds.
An Assistant, not a Nanny
EyeSight is designed to assist the driver, not take over the vehicle. In addition to the Pre-Collision Braking System, EyeSight offers Adaptive Cruise Control, Lane Departure and Sway Warning, and Pre-Collision Throttle Management. For example, if it detects an object and determines that you are likely to hit it, Pre-Collision Throttle Management will reduce power from the engine to help minimize possible impact force and frontal damage.
To work its magic, EyeSight relies on visual cues and fast image processing. Its stereo cameras work by producing simultaneous left and right images. When the two images are superimposed, a deviation is present due to the difference in line of sight of the individual cameras. This deviation becomes smaller or larger depending on the distance of the object, like another vehicle or a pedestrian, captured by the cameras. This is called the “parallax” of an image. The EyeSight system in the WRX Limited uses the image parallax to triangulate the relative distance of the object.
As images are processed by the stereo cameras, commands are transmitted via the vehicle’s high-speed control area network to control systems, including the Engine, Transmission, and Vehicle Dynamics Control Modules. Since the distance is constantly calculated by the system, changes in distance and speed can be used for EyeSight functions such as Adaptive Cruise Control based on the distance between your WRX Limited and the vehicles in front, or emergency braking and Pre-Collision Throttle Management if another vehicle is suddenly too close.
Flexible and Adaptable
Like the rest of the EyeSight system, Adaptive Cruise Control is designed for flexibility. When a vehicle is detected in front of your WRX Limited, Adaptive Cruise Control automatically tracks that vehicle to maintain a proper following distance. This is set by default at the farthest distance possible and can be change based on driving preference. This set distance will be maintained until there is no longer a vehicle in front of you. Similarly, the Pre-Collision Braking System works at speeds from 1 mph to 100 mph by calculating collision probability. The system calculates that probability based on a combination of factors including the distance to the obstacle ahead, overlap rate, steering angle, and relative speed.
A Helpful Assist
The Lane Keep Assist feature sends a beeping notification to alert the driver if the vehicle strays outside its lane when traveling at speeds above approximately 40 mph on interstate highways, freeways, or expressways. Lane Keep Assist uses the vehicle’s electric power steering system to help you keep the vehicle within its lane.
You control EyeSight through switches mounted on the steering wheel, console, or overhead, depending on the model. You can quickly check settings using the instrument panel display.
EyeSight has continued to evolve since its introduction. For example, the cameras now operate in color, and the system’s enhanced recognition features and image processing engine can perform cool tricks like recognizing flashing brake lights.
Proven to Be Effective
Vehicles with EyeSight have received the highest possible ratings in Insurance Institute for Highway Safety (IIHS) front crash prevention tests. Even the best drivers know that the unexpected can happen, and happen fast. By providing another set of eyes on the road, EyeSight is designed to provide you with even greater control and an additional layer of security to help give you peace of mind on the road.
Subaru WRX Limited
1 EyeSight is a Driver Assist Technology which may not operate optimally under all driving conditions. The driver is always responsible for safe and attentive driving. Technology effectiveness depends on many factors such as vehicle maintenance, weather and road conditions. See Owner’s Manual or complete details on system operation and limitations. Please remember to turn off EyeSight when going through a car wash.