In terms of dangers in the tunnel, what must not exceed 480 litres?

The regulation regarding the quantity of fuel in the tunnel is crucial for safety reasons. Fuel, when in significant quantities, presents a serious fire hazard. Ensuring that the amount of fuel does not exceed 480 litres is a safety measure aimed at minimizing the risk of fire or explosion, which can be particularly catastrophic in a confined space like a tunnel.

This limitation helps to control the quantity of potentially dangerous substances that could ignite, ensuring that safety protocols are adhered to. This regulation is essential to managing the risks associated with flammable liquids in environments where ventilation may be limited, and access for emergency services could be impeded. Managing fuel quantities safely contributes directly to the overall safety of operations taking place in the tunnel and protects personnel and equipment from potential hazards.