Rodoviária Nacional

The services were first organized in ten "Centros Operacionais de Passageiros" (COP) (Passenger Operational Centres) managing the activities of a similar number of nationalized corporate groups, such organization meant a confusing geographical distribution of operations, so still in 1976 a reorganization into nine "Centros de Exploração de Passageiros" (CEP) (Passenger Managing Centres) settled on a more logical regional organization was set up.

In 1977, CEP10 was created for managing hire and special services in Lisbon. This division along with other CEPs started to promote medium to long distance services that would be labeled as "Expresso" from 1979.

The CEP10 headquarters and terminal for long distance services was located on former Claras Transportes' station at Av. Casal Ribeiro, opened in 1973. The passenger amenities and ticket booths were located on the ground floor, the arrival and departure lanes on the first underground level, the workshops and depot on the second underground level, parcels and cargo section on third underground level, for such reasons this station was known as "the cave".

In 1984, the most of CEP5 and parts of CEP6 became the DGRL ("Direcção Regional da Grande Lisboa", or Regional Management of Greater Lisbon) split in 4 COPs, the process of fleet reorganization would last until September 1986. Also in 1984, Vila Franca de Xira, Arruda dos Vinhos, Alenquer (all from CEP6), Torres Vedras (CEP4) and Ericeira/Mafra (CEP5) corridors were passed to CEP10. The creation of DGRL along with CEP10 incorporations meant the extinction of CEP5 and CEP6.