b'Construction briefingThe traverse must provideThe traverse should containCables, ducts and pipes must shelter against precipitationas few hiding spacescorners,be hidden from view.and wind in the areas betweenniches, etc.as possible.the entrance on the south sideThe traverse must have a and the platforms. AmongstFrom the traverse, peoplefree height of at least 3 metres, other things, this means that theshould have a view of themeasured from the top of the traverse should be connected toplatforms and the surroundingfloor to the bottom of any the platform roofs. areas. Having such overviewobjects attached to the ceiling.helps to create clear and safe All passenger flows in theorientation and navigation. Selection of requirements.transfer areas must be logical,Source: Prorail and NS Poort comfortable, and obstacle-free.All transfers should be(2011), Tender specification for processed in accordance withAlkmaar Station project.processing level C (for horizontal transfers) or processing level D (for vertical transfers) as a minimum. Level C and D correspond respectively to 41 persons/metre/minutefor horizontal transfers and38 persons/metre/minutefor the stairs.71255 Photo: Ossip van Duivenbode, courtesy of VenhoevenCS'