Region Tuscany — Grafo road Iter.Net version 4.48

Regione Toscana has equipped itself with an informative layer of roadworthiness in accordance with existing standards and directives at national and European level. The roadway graph consists of the following basic entities:----Road element: linear entity bounded by two joints, identified by an ordered set of points. It generally represents the axis of a single-track section of road.----Road junction: it is normally a point of intersection of the axles of two road elements. A junction is always a punctual entity (node), represented in geometric terms by a pair of coordinates.From the base entities are derived the following:----Extreme administrative: set of road elements aggregated according to administrative criteria, i.e. the administrative classification of the road and its patrimony.----Toponym: it corresponds to a portion of the mobility network, to which is assigned a certain name from a given municipality, which is part of the municipal road.The basic entities have been associated with other information:--- civic number: it is used to define an address, it has no spatial component and is always logically related to access. Each civic always corresponds to an external access that can be direct or indirect.----Access: a specific element identifying on the territory external, direct or indirect main or secondary access to a specific place of residence/activity.托斯卡纳大区（Regione Toscana）依据国家及欧盟现行标准与指令，搭建了道路适航性信息层。 其道路路网图包含以下基础实体： - 道路元素（Road element）：由两个节点界定的线性实体，通过有序点集进行标识，通常代表单车道路段的轴线。 - 道路交叉口（Road junction）：通常为两条道路元素轴线的交汇点，始终为纯点状实体（节点），在几何上以一对坐标表示。 由上述基础实体衍生出以下实体类型： - 行政聚合路段（Extreme administrative）：按行政标准聚合的道路元素集合，即基于道路及其资产的行政分类所形成的路段组。 - 地名路段（Toponym）：对应交通出行网络的一部分，由所属市政当局赋予特定名称，属于该市政道路的组成部分。 基础实体还关联了以下补充信息： - 门牌号（civic number）：用于定义地址，无空间属性，始终与出入口存在逻辑关联。每个门牌号始终对应一条直接或间接的外部出入口。 - 出入口（Access）：用于标识领地范围内，通往特定居住或活动场所的直接/间接主、次外部出入口的特定元素。