ABSTRACT
The article describes the current state of ventilation of high-mountain road tunnels at the Too-Ashuu and Kok-Art passes. The natural factors affecting the mode of air movement through automobile tunnels in high altitude conditions are indicated. The features of the conditions of the highlands are extremely peculiar and are distinguished by a complex relief, a sharp change in climate and seismicity. An assessment was made of ventilation systems for automobile tunnels, based on the actual flow of vehicles today. As a result of the tunnel ventilation calculation, the amount of air required to ensure normal movement through the tunnel, it is necessary to switch to a more efficient way of ventilating high-mountain road tunnels. Safe, productive and high-quality ventilation is one of the main conditions for the operation of road tunnels. Tunnel traffic must be safe, comfortable and reliable.
