Abstract
There is an analysis of the mechanism of accidents and it shows that improving road conditions and improving the speed and braking properties of the car, stability and controllability does not increase the active safety of road traffic. These measures only move the boundaries within which the driver can drive safely. The parameters of quality of car operation, which characterize the traffic safety, have been determined. The values of car operation quality parameters that correspond to different levels of traffic safety have been defined. In order that the proposed parameters of quality of car operation can be used to control the safety of traffic modes by drivers and traffic police, the computer must be used to calculate these parameters as a standard residual of the car. The studies carried out made it possible to single out three indicators of the quality of driving a car, which characterize the safety of the driving mode: maximum speed is the ratio of the average speed to the maximum, called the speed coefficient, the standart deviation of the vehicle's longitudinal acceleration from the average value, which is called acceleration noise in the theory of traffic flows. The above indicators of the quality of driving are measured from the moment of the start of the trip.