speed limit

Attention new flow URL carto.ain.fr becomes geodata.ain.fr Last modification of the graph Nov 2023: decommissioning of the RD979 from Boulevard Charles de Gaulle to the roundabout of the Alagnier (urban part in the town of bourg) avenue Amédée Mercier Roads are all represented by a single axis even in the case of separate pavements. At junctions / intersections, sections not participating in the main road are cut off at the outer edge of the junction (stop / cede the passage). To ensure the topology of the road graph pseudo roads have been added (categorie_admin=intersection) but do not participate in the linear of the RD. For roundabouts, the calculation of the PR+abs follows the axis of the roundabout in the direction of the route (meaning of the PR) and thus travels part of the roundabout virtually while physically there is a discontinuity (PV_beginning / PV_end). The field 'categorie_admin' allows to know its use. rd / intersection / junction_pn / roundabout. The total length of the network coming together as the sum of the cumulf-cumuld of the rd and giratoire. Field determination rule: axis the wording of the route is in the form of Dxx (e.g. D23) For roads with name extensions (letter after the number of the RD), this extension is added afterwards with a minus (indent of 6) in separator (e.g.: D23-C). For roundabouts an extension 'GIRxxx' is added next with an underscore (tiret of 8) as a separator. ex D72-A_GIR_02_0262. PR of the entry of the roundabout on 2 characters with 0 in prefix to complete 4-character abscissa of the roundabout entry with 0 prefixes to complete Field determination rule: axis_cd01 Axes of the Departmental Routes of Ain (e.g. 01 D0117A). Rules for naming roundabouts (in the process of being entered): E.g.: GIR0117A_09_0611 GIR route type prefix RD number on 4 characters with 0 in prefix to complete Letter from RD with _ if no letter Separator _ PR of the entry of the roundabout on 2 characters with 0 in prefix to complete 4-character abscissa of the roundabout entry with 0 prefixes to complete Intersection management scheme: 注意：新的流量URL已从carto.ain.fr切换至geodata.ain.fr。 2023年11月路网最后更新：已拆除从戴高乐大道（Boulevard Charles de Gaulle）至阿拉尼耶环岛（位于布尔格镇城区段，衔接阿梅代·梅西耶大道（avenue Amédée Mercier））的省道（Route Départementale，简称RD）979。 即便存在分隔式车行道，道路仍以单轴线形式表示。在交叉路口/十字路口处，不参与主路通行的路段将在交叉口外边缘处截断（需停车让行）。为保障道路路网拓扑完整性，新增了虚拟道路（行政类别字段categorie_admin=intersection），但此类虚拟道路不纳入省道（RD）的线性里程计算。 对于环岛，参考点（Point de Référence，简称PR）+横坐标（abscissa，简称abs）的计算需沿环岛轴线按照行车方向进行，因此会虚拟行经环岛的部分路段，而物理层面此处存在断点（PV_beginning / PV_end）。 可通过行政类别字段（categorie_admin）识别其用途，取值包括：省道（rd）、交叉路口（intersection）、优先通行路口（junction_pn）、环岛（roundabout）。路网总长度为省道（rd）与环岛（giratoire）的cumulf-cumuld累计值之和。 轴线字段命名规则： 道路编号格式为Dxx（例如D23）。 若省道（RD）编号后带有后缀字母，则需以连字符（缩进6字符）作为分隔符追加后缀（例如：D23-C）。 环岛的命名需追加'GIRxxx'后缀，以下划线（8位分隔符）作为分隔符。 示例：D72-A_GIR_02_0262。 环岛入口的PR编号需补足为2位，不足时前置补0；环岛入口的横坐标需补足为4位，不足时前置补0。 axis_cd01字段命名规则： 安省（Ain）省道（Route Départementale，简称RD）轴线命名格式例如：01 D0117A。 环岛命名规则（正在逐步录入中）： 示例：GIR0117A_09_0611 命名规则拆解： - GIR：道路类型前缀 - 省道编号：补足为4位，不足时前置补0 - 省道后缀字母：若无后缀则用下划线替代 - 分隔符：下划线 - 环岛入口PR编号：补足为2位，不足时前置补0 - 环岛入口横坐标：补足为4位，不足时前置补0 交叉口管理方案：