The extension was announced last year, but the route hasn’t been finalised yet, with studies being conducted currently on possible connectivity to the Meydan Station of Etihad Rail near Meydan.

The union rail network, which is set to complete phase one by 2017, is also expected to connect with the Red Line of Dubai Metro at Al Maktoum International Airport, a senior Roads and Transport Authority (RTA) official announced in Dubai on 29 April.

"Dubai’s strategic master plan for infrastructure development is being revised with an aim to prepare for the Expo 2020 as well as to connect with the larger national network," said Abdul Mohsin Younes, CEO of RTA’s Strategy and Corporate Governance Sector.

The authority has launched survey to identify the areas of improvement and the projects that will be required to serve the event.

He said RTA is currently studying feasibility of linking the two networks at two locations — Meydan and Al Maktoum International Airport.

"We are looking at various options and one of it could be extending the Green Line to Meydan on its way to Academic City, but… there could be other ways of connectivity as well. As for the Red Line it will be extended to Al Maktoum International Airport, facilitating mobility to the Expo 2020 site," said Younes.