At present, the collision prevention auxiliary system and the adaptive braking system that are standard on Mercedes-Benz's new A-class cars can effectively reduce the incidence of rear-end collisions. The anti-collision assistance system will issue a warning when the driver is distracted. In this case, the adaptive brake system increases the pressure in the brake line, so that the brake lining and the brake disc are in slight contact, allowing them When the brake pedal is depressed, it can be fully engaged immediately.
Unlike the auxiliary systems in the compact models currently on the market, this anti-collision assistance system is not specifically designed to reduce accident injuries in urban road conditions. Instead, it is aimed at rear-end collisions in high-speed environments with a speed of more than 30 kilometers per hour.
Since 2005, Mercedes-Benz has concluded in road tests of 4.5 million kilometers in Europe, the United States, Japan, South Africa and other places that the probability of a rear-end accident at a speed of more than 30 kilometers per hour is greater than that of a speed of less than 30 kilometers per hour improve.
The anti-collision assistance system has practical significance for reducing the rate of rear-end collisions. The survey shows that after 110 car drivers are equipped with anti-collision assistance systems and adaptive braking systems in simulated driving, the typical accident rate has been reduced from 44% to 11%.
The anti-collision assistance system and the adaptive braking system have the following functions:
· When the speed of the car is in the range of 30 to 250 kilometers per hour, the system will distinguish whether the distance to the car in front is enough, so as to remind the driver in time.
· When the system detects that the distance to the vehicle in front is getting smaller and reaches a critical value, the system will issue an audio-visual warning.
· Identify the stationary objects in front of the car and issue a corresponding warning when the speed exceeds 70 kilometers per hour.
· Be able to calculate the most accurate braking force to avoid the accident when the accident is about to occur instead of violent braking. This gives the driver in the rear sufficient reaction time and brakes.
· The braking force will change in real time according to the changes of the situation-that is, the vehicle in front accelerates, the braking force decreases; otherwise, the braking pressure will further increase when the distance from the vehicle in front decreases. When the car is equipped with an early warning safety system, the collision prevention system will provide early warning and trigger early warning protection measures, such as the seat belt being tightened by the tightener in advance and so on.
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