Overture Maps - Transportation

Overture's transportation layer is the collection of features and attributes that describe the infrastructure and conventions of how people and objects travel around the world. Transportation data includes highways, footways, cycleways, railways, ferry routes and public transportation.

1. Segments:

Segments are paths which can be traveled by people or things. Segment geometry represents the center-line of a path which may be traveled. Segment properties describe both the physical attributes (e.g. road surface and width) and non-physical attributes (e.g. access restriction rules) of that path. Two Segments are physically connected if a common Connector is referenced from the connectors property of both Segments. Where this occurs, both Segment geometries must contain the common Connector's coordinates. A physical connection between Segments indicates that it may be possible to travel from one segment to the next at the connected location, provided the Segment properties do not indicate a restriction, such as a turn restriction, which would prevent the transition in a particular case. Conversely, two segments are not physically connected—even if their geometries intersect—if they do not share a Connector in common.

2. Connectors:

Connectors create physical connections between Segments. Connectors help define the topology of the transportation network by defining points of physical connection between two or more Segments.

Founded in 2022 under the Joint Development Foundation, Overture Maps Foundation (Overture Maps) is dedicated to the development of reliable, easy-to-use, and interoperable open map data that will power current and next-generation map products. We build this data through a collaborative process that combines technology, data, and support from a wide range of companies. Map data are assembled from multiple sources including members, civic organizations, and open data sources.

Overture's data themes and schema are licensed under CC-BY 4.0. GERS IDs are licensed under CDLA Permissive v 2.0. Data associated with the themes through GERS can carry different licenses. However, if the data associated though GERS with an ODbL licensed theme constitutes a derivative dataset, it must be licensed under ODbL. See OpenStreetMap Community Guidelines for definitions of a derivative database.

This data is processed, onboarded and maintained by CARTO in collaboration with the Overture Maps Foundation.

Overture的交通图层（Transportation Layer）是收录描述全球人员与物资通行的基础设施及通行规范的要素与属性的数据集。交通数据涵盖高速公路、步行道、自行车道、铁路、渡轮航线及公共交通线路。

1. 路段（Segments）：
路段是可供人员或物资通行的路径。路段几何形状代表可通行路径的中心线。路段属性同时描述该路径的物理特征（如路面材质与宽度）与非物理属性（如通行限制规则）。若两个路段的连接器属性均引用了同一个连接器（Connector），则二者在物理上相互连通。此时，两个路段的几何形状必须包含该公共连接器的坐标。路段间的物理连通意味着，只要路段属性未设置转向限制等会阻断特定通行场景的规则，即可在连通位置从一个路段通行至另一个路段。反之，即便两个路段的几何形状相交，但若未共享公共连接器，则二者不存在物理连通性。

2. 连接器（Connectors）：
连接器用于构建路段间的物理连通关系，通过定义两个或多个路段之间的物理连接点，助力搭建交通网络的拓扑结构。

Overture地图基金会（Overture Maps Foundation）于2022年在联合开发基金会（Joint Development Foundation）框架下成立，致力于开发可靠、易用且具备互操作性的开放地图数据，为现有及下一代地图产品提供支撑。我们通过整合各类企业的技术、数据资源与支持，以协作流程构建此类数据，地图数据由多源汇聚而成，来源包括会员单位、民间公益组织及开放数据源。

Overture的数据主题与数据架构采用知识共享署名4.0（CC-BY 4.0）协议授权。GERS标识符（GERS ID）采用社区数据许可协议宽松版v2.0（CDLA Permissive v2.0）协议授权。通过GERS关联至数据主题的数据可采用不同授权协议。但若通过GERS关联至开放数据库许可（ODbL）授权的数据主题的数据属于衍生数据集，则必须采用ODbL协议进行授权。有关衍生数据库的定义，请参阅《开放街图社区指南》（OpenStreetMap Community Guidelines）。

本数据集由CARTO与Overture地图基金会合作完成数据处理、入库与维护工作。

搜集汇总

背景与挑战

背景概述

该数据集包含描述全球交通基础设施的路段(Segments)和连接器(Connectors)数据，涵盖公路、步道、铁路等多种路径类型及其物理/非物理属性。数据由Overture Maps Foundation联合多方机构共同开发，采用CC-BY 4.0等开放许可协议，并由CARTO负责维护处理。