Another serious road accident occurred in the tunnel after Solanas and before the junction for Castiadas, on the new Orientale Sarda highway.
A car and a pickup truck collided, injuring a woman. The accident caused long lines of traffic.
"We're talking about a dangerous tunnel, completely in the dark," said the mayor of Castiadas, Eugenio Murgioni.
The Carabinieri and an ambulance from 118 were on site.
