A huge and quite important role in safe exit from the street with limited visibility plays traffic mirrors. Traffic mirrors, also known as safety mirrors or blind spot mirrors, have a significant impact on road safety. These mirrors are designed with a curved surface that allows for a wider field of view, making it easier for drivers to see objects and vehicles that may be in their blind spots. In order to commit a safe maneuver driver should be confident that the car moving down the street is at a sufficient and safe distance from the exit. Of course, the driver needs to have a perception of the time of the moving car to the place of exit from the street. All of these things play a significant role in safety exit and avoiding collisions. Traffic mirrors ensure an overview of the situation on the road. Moreover, the driver can measure the approximate distance by counting time for approaching the car. The experiment presented in the work is based on the time of the car’s approach. The purpose of this article is to detect the optimal time as well as distance before the street with limited visibility in order to exit the street safely and to avoid collisions. In this paper, we provide systematic approach to the research of a data and statistics of this data.