CC CPSU

Deadly raids on pedestrians and other severe accidents would have been much less if the drivers immediately respond to obstacles and instantly be entered into the brake system. In fact, driver's reaction time? of 0.2-1.5 sec. It depends on individual abilities. The lower limit of – 0.2 seconds is only possible thanks to the exceptional innate abilities or the constant exercise of the reaction. Therefore, when calculating the average reaction time takes 0.8 seconds. Is it much or little, judge for yourself. For a second time to drive the car at speed: -5.6 m 20km/chas 40km/chas -11.1 -16.7 meters 60km/chas meters 80km/chas – 22.2 meters 100km/chas – 27.8 meters, 120 km / h – 33,3 m 150km/chas – 41.7 meters. At times increases the reaction time and alcohol intake, drugs, and many drugs, the state of fatigue.

Therefore, in these cases and to wait? better not to sit behind the wheel than jeopardize their own and others' lives. By no means immediately activated and the braking system. After pressing the pedal from the pedal force to the brake mechanism is held for some time, called the delay time of the brake actuator. When good condition brake lag time is from 0.05 to 0.6 (limit value) seconds, depending on the structural system. As the calculated value for modern cars taken the time lag of 0.2 seconds.

Hydraulic brakes faster than a pneumatic, but in any case, it turns out that from the moment when the driver saw an obstacle to the start of braking is almost an entire second, for which a vehicle passes a certain distance. And in the process of inhibition also takes time. The magnitude with which the vehicle speed drops is called the steady deceleration. Slowing down for a car should be not less than 7 m/s2, ie from 80 km / h or 22.2 m / s machine must stop a little more than 3 seconds. Note that this time calculated for ideal conditions – a dry smooth pavement. If you add up all the figures, the it turns out that at 80 km / h safe for pedestrians? is the distance (braking distance + distance before braking), called stopping by, 50-55 meters and 4 seconds of time. If the driver is, of course, in time react. I still have memories of a driver's instruction of the old school, vozivshego party bosses. It would be superfluous for all amateurs.? Old driver? as it explained what the difference driving at speeds of 200 and 100 km / h: "At 100 you show something, you can still look at before making a decision, but at two hundred – the brakes as soon as something felt." Uncle was a school that prepared at the time of the Union of the drivers for the secretaries of the CC CPSU. For All his life he had never been party to an accident.