Line 15 South of the Grand Paris Express has just reached a highly symbolic milestone. The 33 km line runs between Pont-de-Sèvres in Boulogne-Billancourt and Noisy-Champs in Seine-et-Marne.
Soon, the trains will be able to carry out their first test. One more step towards the launch of the future automatic metro which will run on a ring road around Paris by 2032. Four other lines are planned.