Saudi Arabia
The Riyadh Metro in Saudi Arabia is slated to become the largest public transport network project in the world upon completion.
The metro will consist of 176 kilometres of railway lines on which electric trains will operate autonomously.
Over 40 per cent of the train routes will be underground lines. The network is being developed as part of the King Abdulaziz Public Transport Project, which is valued at a massive $22.5 billion.
The first phase of the Riyadh Metro is expected to begin operations as early as March of this year, according to Fahd Al-Rasheed, CEO of the Royal Commission for Riyadh City. Al-Rasheed stated that subsequent phases will launch shortly after the first phase debuts.
The goal is to have the full Riyadh Metro network up and running before the end of the year. Once completed, it will be the largest single-phase public transport undertaking ever developed.