It is the layer that collects information relating to mobility and transport of whatever nature they are. The layer describes: - the modeling by areas which mainly collects the geometric construction characteristics of the transport infrastructures; - the modeling of the viability with traffic flow simulation graphs, more aimed at completing the characteristics of transport interest for mobility. They are therefore grouped together in this section of the specification the following contents:- Roads and related details, including both the infrastructures constituting the primary and secondary roads, within the theme "roads" are included areas intended specifically for vehicular and/or pedestrian traffic and /or that of cycles.- Rail transport infrastructures and related details, including in this item both railways and subways, tramways, funiculars.- Other types of transport infrastructures and plants and related details, including cableway transport in this item (cable cars, ski lifts, etc.), the methods of water transport connection (ferry...), other transport structures.Description of the DECREE of November 10, 2011Technical rules for the definition of the content specifications of the geotopographical databases.(Official Gazette no. 48 of 27/02/2012 - Ordinary supplement n. 37). Corresponds to Strato 01 Viability and Mobility of the DM. Contains datasets such as: Vehicle traffic area (AC_VEI - 010101), Pedestrian traffic area (AC_PED - 010102), Cycle traffic area (AC_CIC - 010103), Road area ( AR_STR - 010104),Mixed secondary road network (AR_VMS - 010105),Road element (EL_STR - 010107),Road junction (GZ_STR - 010108),Road section (TR_STR - 010109),Road intersection (IZ_STR - 010110),Cycle path element ( EL_CIC - 010112),Cycle junction (GZ_CIC - 010113),Lev.1 road network (RT_ST1 - 010114),Lev.2 road network (RT_ST2 - 010115),Mixed secondary road network element (EL_VMS - 010116),Viability junction mixed secondary (GZ_VMS - 010117),Mixed secondary traffic network (RT_VMS - 010118),Cycle path network (RT_CIC - 010119),Rail transport site (SD_FER - 010201),Railway element (EL_FER - 010202),Railway junction ( GZ_FER - 010203),Tramway element (EL_TRV - 010204),Tramway junction (GZ_TRV - 010205),Subway element (EL_MET - 010206),Subway junction (GZ_MET - 010207),Funicular element (EL_FUN - 010208),Funicular junction ( GZ_FUN - 010209),Industrial Track (BI_IND - 010210),Railway Network (RT_FER - 010211),Tramway Network (RT_TRV - 010212),Metro Network (RT_MET - 010213),Funicular Network (RT_FUN - 010214),Cable Transport Element (EL_FNE - 010301),Water Transport Element (EL_ACQ - 010302).