Many car-owners love to proud of such functions in their cars as ABS, ASR, ESP etc… At that, many people do not even have an idea what these obscure encodings mean.
ABS system (Antilock Braking System)
Most often these three letters are buzzword. Probably, everybody knows the decoding, but hardly everybody knows what it means. Among all these systems ABS was the first one to appear. It exists already for dozens of years. It does not allow wheels to be locked at the moment of braking in extreme cases when the driver had to push on the brake pedal with too much strength. Two unpleasant things happen during locking. First of all, a car can lose control, that is, it will be drifted aside and that can lead to a road accident. Secondly, wheel treads are worn out. Due to sensors managed by controller the system monitors the car speed and wheel rotation rate. In the result, in case of a forceful and harsh braking the wheels will continue rotating and will not be locked. Activation of ABS can be felt in the form of joggles on the brake pedal. Logic continuation of antilock braking system is EBD, which correctly distributes braking efforts of every wheel separately. This happens when the driver has to brake in emergency on the irregular pavement and the car goes skidding.
ESP system is a development from 90s. It is decoded as En Route Spacing Program. In more simple terms, this function provides stability of the car at high speed. Car may fail to negotiate the corner or, otherwise, it can go skidding, and ESP is especially designed for prevention of such incidents. This system monitors that the trajectory of the movement exactly corresponds to wheels direction and if it deviates from the norm, it sends a signal to ABS system, which, in its turn, slows down the necessary wheel. In general, ESP wonderfully supplements ABS, because this function is much more effective as regards safety. The first system simply does not allow locking of wheels. The second system monitors every wheel separately and controls car stability.
Many people heard of the decoding of ASR as Antispin Regulation. It prevents wheels from spinning which may take place in hard road conditions (mud, ice etc.) or in the result of wheel overload during maneuvering. The system detects that wheel rotation rate does not correspond to car speed (that is, wheels rotate fast, while the car stands still or moves very slowly). In this case ASR slows down the wheels and locks the compensating gear. Wheel spin also may occur in the result of skidding at high speed. So that it does not happen, ASR reduces engine rpm. At different cars antispin regulation can have different names, for example, TRC – traction control.
BAS (Break Assistant) It is designed for reduction of braking path. It activates in case when the driver in dangerous situation pushes on the brake pedal in panic. All above-mentioned systems have one common goal: guarantee of safety during movement. In fact, all these functions are needed to correct wrong operations of the driver. Electronic safety systems can be very useful for inexperienced car-users. Among experienced drivers dissatisfaction often can be heard because many of them like dynamic, sometimes even aggressive and dangerous drive. First of all, there are cars in which these options can be switched off. Secondly, even if a car-user is greatly experienced in extreme driving, it is better not to risk once again and keep in mind the value of his/her own life and of others.