The problem of environmental pollution is one of urgent problems of mankind. This problem especially applies to large cities of any state. Atmospheric air, which performs life-supporting, protective and other functions, is subject to the greatest change. Increased air pollution leads to a negative impact on public health. So, every year number of social movements and various events is growing, expressing great concern about the state of air in the city of Bishkek. Basically, organizational and technical measures are aimed at improving road safety by reducing speed. But along with a decrease in traffic speed, fuel consumption increases, which in turn leads to a proportional increase in exhaust gas emissions. Especially in places where artificial irregularities are established, intensive braking occurs, followed by acceleration of the vehicle. This article is devoted to assessing the impact of unregulated pedestrian crossings on average speed of traffic and emission of harmful substances by vehicles. Relationship between the average traffic speedat unregulated pedestrian crossings and the total delay of vehicles has been established. An increase in emissions from vehicles at unregulated pedestrian crossings is substantiated, which makes it possible to calculate the cumulative emissions from vehicles on the sections of the city’s road network more accurately. This article presents the results of experimental studies of the influence of artificial irregularities, stopping points and parking places on the traffic speed and emissions of exhaust gases into the atmosphere.

The article presents the results of the development of an integral indicator of road safety - the road safety coefficient. The value of the road safety coefficient shows how many times, at the same levels of motorization, the risk of death of a resident in road traffic (social risk) decreased/increased in comparison with the average social risk that existed in the world in the 40s of the last century, when there were no special programs on improving road safety. The use of the road safety coefficient allows you to compare the level of road safety in countries and regions with different populations and different levels of motorization. It is shown that social risk is a complex indicator, the value of which depends on the indicators of road safety at a lower level - the probability of participation of a resident in road traffic, which is equal to the value of motorization, the probability of death of a road user (transport risk), the probability of a road accident (active road safety), the intensity of road accidents (reliability of driving) and the average annual mileage of the car, the probability of death in a road accident (passive and post-accident safety). An equation is obtained that relates the value of social risk to the values of lower-level road safety indicators. The analysis of the level of road safety in Kyrgyzstan is carried out. It is shown how the condition of the traffic flow affects its average speed and the probability of road accidents. The influence of traffic flow density on its average speed and intensity of road accidents is considered. To assess the impact of the condition of a traffic flow on its average speed and road safety, the concept of the conventional density of a traffic flow is used. It is revealed that in the road conditions of Kyrgyzstan there is a critical conventional density, when exceeding it the transport risk, the probability of a road accident and the probability of death in a road accident begin to decrease rapidly with a further increase in the conventional density. The low efficiency of detection of exceeding a permitted speed when measuring the maximum speed of cars at certain points is shown. It is proposed to use the measurement of average speed on certain road sections as a means of reducing the number of drivers exceeding the speed limit.