The information was disclosed by transport minister François Bausch speaking in parliament on Thursday.

He further explained that after the tramline opens in Kirchberg on 10 December, passengers must wait until summer 2018 for the line to be extended to place de l’Etoile.

Seven new stations will be built on an additional 4.9-kilometre line between the train station and Cloche d’Or. These will include Bonnevoie high school, the future train station in Howald and the Cloche d'Or (next to the future national stadium) and are expected to relieve traffic to the south of the country, said the minister.

He added that while it is planned to open this section for 2021, the timeframe depends on the progress of construction work on the new national road N3.

The second 3.9-kilometre route, serving the Heienhaff exchange hub (where a 4,000-space park and ride car park will be located) and Findel airport, is scheduled to be completed for 2021. The total cost of the two extensions is estimated at €214 million, according to the minister.