Two tube Zigana tunnel has 2 tubes. Eas tube has 2 lanes. Each tube is 14,5 kilometre long.

Zigana Tunnel is also World's third longest road tunnel.

https://www.hurriyet.com.tr/ekonomi/zigana-tuneli-aciliyor-yol-30-dakika-kisalacak-tum-mevsim-sartlarinda-acik-kalacak-42261231