Major Roads

Major Roads is a subset of the National Roads by Geoscape dataset, filtered for highways, arterial and sub-arterial roads. National Roads by Geoscape is a digital representation of the road network of Australia. National Roads contains linear features to describe surfaces that have been improved to enable vehicular, pedestrian and bicycle transportation on land and ferry routes that enable vehicles to cross water bodies. National Roads does not include railways, tramways, driveways or passenger ferry routes.This dataset provides an optimised aggregated national view of road geometry and attribution. The dataset is created from multiple sources including jurisdictional data which is revised regularly and supplied in varying formats and at different levels of quality.The area covers the land mass of Australia, including offshore islands. Norfolk Island is currently not included.

主要道路数据集（Major Roads）是Geoscape国家道路数据集（National Roads by Geoscape）的子集，经筛选后仅涵盖高速公路、主干道与次主干道。Geoscape国家道路数据集是澳大利亚道路网络的数字化呈现，包含线性要素，用于描述经改良以支持陆地机动车、行人及自行车通行的路面，以及可供车辆跨越水体的渡轮航线。该数据集未包含铁路、有轨电车线路、私人车道及客运渡轮航线。主要道路数据集则提供了优化后的聚合式全国道路几何与属性信息视图。该数据集的构建依托多种数据源，包括定期修订、格式各异且质量水平参差不齐的辖区级道路数据。其覆盖范围涵盖澳大利亚本土及所有近海岛屿，目前暂未包含诺福克岛。