The 57km standard-gauge line from the city centre to the new Blaise Diagne International Airport (AIBD) near Ndiass will largely follow the western section of the existing Dakar - Diourbel metre-gauge line, which will be upgraded as part of the project.

The line will be designed for 160km/h operation with 25kV ac electrification and an "international standard" signalling system. The journey time between the two terminus stations will be 46 minutes and the line will serve 12 intermediate stations.

Alstom confirmed to IRJ that the regional EMUs will be based its Coradia Polyvalent design, which is already in widespread use in France with 192 trains in service or on order, but says it cannot provide any further details at this stage.