Discover the essential 'Step by Step Guide for Road Tunnel Ventilation Design'. Learn how to ensure safety and compliance in tunnel projects.

Basement ventilation systems operate in Normal Mode and Fire Mode. Normal Mode maintains air quality by removing vehicle exhaust gases using sensors, jet fans, and exhaust fans. When a fire is detected, the system switches to Fire Mode, where smoke exhaust fans run at full capacity and airflow is directed to remove smoke quickly, improving visibility and ensuring safer evacuation and firefighting operations.