Longest road tunnel in the world at this time (24,510 m). Enlargements illuminated in blue colour at distances of 6 km shall avoid drivers falling asleep, help against claustrophobia, and allow for a rest.
Longest road tunnel in the world at this time (24,510 m). Enlargements illuminated in blue colour at distances of 6 km shall avoid drivers falling asleep, help against claustrophobia, and allow for a rest.