The Trucks Maintenance Centre is an antenna of the Ile et Vilaine departmental equipment park (Britany, France). The project proposes to create a dialogue between the new building and the landscape bocage. The technical aspect of the program is accentuated by a great rationality into the organisation of its functions. This rationality allowed a one way traffic system, synonymous of safety in this constrained area. Two buildings serving different functions are gathered around a spacious courtyard : - Activity building : gathered the administrative functions, supplies shop and motorway workshops - A covered and protected parking and storage building. All the devices set up to offer a real optimization of working conditions, in terms of team safety, spatiality, acoustic conditions, light qualities, materials and relationship with the close environment.