Tunnels are extra dangerous. Not because of the likelihood of an accident, but because of the situation if an accident happens. It blocks the tunnels easily, fills it with smoke, and kills hundreds.
Except newly built tunnels in rich countries.
Tunnels are extra dangerous. Not because of the likelihood of an accident, but because of the situation if an accident happens. It blocks the tunnels easily, fills it with smoke, and kills hundreds.
Except newly built tunnels in rich countries.