ONCF is a state-owned company that is under the control of the Ministry of Equipment, Transport and Logistics and is responsible for all passenger and freight traffic on the national railway network.

For the (main) destinations where there is no train service (yet) the ONCF operates their own bus company Supratours offering connecting bus services from the nearest railway station to places like Agadir, Tétouan or Essaouira[6][7] A major investment program upgrades and extends the network.

There are 6 trains per day: some demanding change at Taourirt wye - others provide direct services up to Casablanca.

When completed trains can run directly to Rabat and Casablanca without having to use the longer route via Sidi Kasim.

The French president Nicolas Sarkozy was guest on 29 September 2011 when the actual construction of the line started.

The lines south of Oujda are for freight only and until the passenger-service starts the link Tanger-Tanger MED is also only operated for freight: mainly for the Renault factory at the port[10] The company makes a difference between the long-distance "Grandes Lignes", high-speed shuttle trains between Rabat and Casablanca, Urban transport in the Casablanca region and the "train by road" via daughter-company Supratours[11] On the mainline (Grand Lignes) several trains are operated per day.

On three main routes the ONCF operate special night trains with either full beds in private rooms of couchettes.

These "Voyage de Nuit" is available on:[12] And on the route Tangier-Nador vv there is no official "night train" with beds or couchettes, but there is a night service from Tangier to Oujda or Nador[13] ONCF operates in three main sectors:[14] The turnover of the ONCF was growing, both in passengers and freight, until the decline of the economy in 2007.

It's 186 km long, holds the African rail speed record at 357 km/hr and connects Tangier with Casablanca in 2 hours and 10 minutes (down from 4h45m previously).

The lines to the east of Fes are diesel powered only and the majority of the track is single: opposite trains pass each other at selected train-stations.

On 10 July 2009 king Mohammed VI of Morocco opened the two new railway stations in Nador and the line to Taourirt[24] ONCF is a member of the following organizations: In December 2019 and according to a 2018 agreement, ONCF received the first Prima M4 electric locomotives of 30 more units that will be delivered by Alstom.