The 75th Anniversary Selatin Tunnel was the longest tunnel in Turkey when it was completed. Its twin bores are 3,018 m and 3,043 m long, 12 m wide and 4.80 m high, and carry three lanes of traffic in both directions. The tunnel is equipped with a modern, electronic road traffic safety and control system – the first ever found in Turkey. An engineering and construction success, the tunnel was designated as a model for future tunnel construction in Europe.