International audienceIn Oran metropolitan area, the distant suburban areas are marked at the same time by the underequipment and a transport supply which does not meet the needs for daily trips of their residents. In this context of the fast urbanization growth, the population often poor, which live in the distant outskirts, has problems to satisfy their needs for daily mobility. This article considers the conditions of access to the city centre for poor workers. It aims at understanding to what extent these travel barriers contribute to reinforce the precarious conditions of life and the segregation of the inhabitants in the outer suburbs. First, the study of urban sprawl identifies the characteristics of the urban growth and the conseque...