The exclusive PRESAFE® system can sense that a collision might be imminent, and help prepare for it in the precious moments beforehand. Using a network of sensors (many of them already serving other safety systems in the vehicle), PRESAFE® can detect certain conditions that suggest an accident is about to occur, such as extreme skidding. It then tightens the front seat belts, adjusts the front head restraints and passenger seat, and can close the windows and sunroof, all to better prepare the occupants for more effective results from the restraint systems.
And PRESAFE® doesn´t just optimize the safety systems of your vehicle, it optimizes yours too: The PRESAFE® Sound feature in select, newer vehicles initiates a harmless noise specifically tuned to trigger a reflex in the inner ear that can help to protect it from the pressures of a loud crash.
Maintaining the right space between vehicles is critical to safety, and is particularly helpful when cruise control is engaged. When Active Distance Assist DISTRONIC is enabled, your Mercedes-Benz keeps a selectable set of car lengths between itself and the car in front of it. As traffic slows or stops, your vehicle will slow down as well — even if that means coming to complete stop. Working with features like Active Steering Assist (which helps keep your Mercedes-Benz in its lane) and Active Speed Limit Assist (which monitors road signs to help keep the vehicle within the legal limit), it´s pure ingenuity in the service of safety — yours and that of other drivers too.
Even in the most exciting vehicle, a long journey can bring about driver fatigue. An industry first, ATTENTION ASSIST® takes note of over 70 parameters in the first minutes of a drive to get to know your unique driving style. As your journey continues, it can detect certain steering corrections that suggest the onset of drowsiness. It then considers a wide array of other factors, from crosswinds and road smoothness to how often you’re interacting with the vehicle’s controls and switches. If it all adds up to driver fatigue, ATTENTION ASSIST® sounds an alert encouraging you to stop for a rest.
Danger can come from any direction. Blind Spot Assist goes a step beyond your side mirrors. When radar sensors in the rear bumper detect that a vehicle is alongside yours, a red icon lights up in the side mirror to let you know. If you signal for a lane change, an alert sounds. With Lane Keeping Assist, a special camera watches the markings on the pavement as you drive. If it senses that you’re drifting out of your lane, it vibrates the steering wheel. And with either system, advanced active technology can apply the brakes on one side of the vehicle, to help guide you back into your own lane.
Comprised of four separate features, adaptive braking technology makes it easier for your Mercedes-Benz to stop and to remain at a standstill. Predictive Brake Priming senses when a driver´s foot lifts off the accelerator suddenly, and moves the brake pads closer to the wheels in preparation for a quick stop. When you´re driving in the rain, Automatic Brake Drying applies just enough brake pressure to sweep built-up water from the discs. If you´re stopped on an incline, Hill-Start Assist helps keep the car from rolling back when you lift your foot off the brakes. And the brake HOLD feature allows you to take your foot off the brakes when sitting at a long light or in stopped traffic, after a firm extra push on the brakes.
At Mercedes-Benz, we know from experience that just a few pieces of data could someday mean the difference between a collision and just another close call. And that’s exactly why we created the Mercedes-Benz Accident Investigation team, a special unit in Stuttgart dedicated to gathering and evaluating information that has the potential to save lives across the world.
From calculating impact speed to collision angles, the exhaustive data collected at the scene by the Accident Investigation team not only continues to inform our ongoing improvement of existing safety features, but also has led to the development of groundbreaking Mercedes-Benz technology such as ATTENTION ASSIST® and DISTRONIC PLUS® with PRESAFE® Brake. The fact is, the more we know about what happened, the better chance we have of inventing a way to help keep it from happening again. It’s just one of the ways we’re working in Germany to engineer a safer future for all drivers worldwide.
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