Road Monitor NES Dataset

Description

This dataset provides geospatial data for analyzing the street network and covers north-east Switzerland (NES) for two timestamps, combining OpenStreetMap (OSM) and Swisstopo sources. It includes rasterized street masks, original street geometries, high-resolution orthophotos, and metadata to support tasks such as change detection, segmentation, data quality assessment, data fusion, map comparison, and diverse geospatial machine learning workflows.

Contents and Processing

The dataset covers two timestamps (2022 and 2025) and is projected in the Swiss national coordinate reference system CH1903+ / LV95 (EPSG:2056). It consists of high-resolution aerial orthophotos (swissIMAGE 10 cm) paired with binary road masks and clipped road geometries, both derived independently from OpenStreetMap and swisstopo swissTLM3D for each timestamp. Road geometries are limited to above-ground segments, that means, tunnels were excluded from both sources. Road masks were rasterized from the vector geometries and are pixel-aligned with the orthophotos. Tiling scheme and file naming follow the swisstopo convention. All significant road classes are included, with widths set to conservative minimum values to minimize false positives in the masks. The TLM class definitions follow the Objektkatalog swissTLM3D 2.4 and the widths are furthermore oriented at the RICHTLINIE NORMALPROFILE Nationalstrassen 1. und 2. Klasse. OSM class definitions follow the OSM wiki. For most TLM classes, the assigned width corresponds to the minimum width specified in the swissTLM3D object catalogue. Exceptions are “Autobahn” and “Autostrasse”, which are estimated from lane counts. Lane widths are in the range of 3.25–3.75 m. Accordingly, “Autobahn” assumes a minimum of 4 lanes (4 × 3.5 m) plus a dividing structure of 1.5 m and 0.5 m safety margins on each side. “Autostrasse” assumes 2 lanes (2 × 3.5 m) plus 2 × 0.5 m safety margins. Since OSM class definitions are comparatively vague and more granular, the TLM mapping scheme was approximately adapted to the OSM data. Please see the README for detailed information, including descriptions of the various road classes and chosen mapping widths.

Data Sources, Attribution, and Licensing

This dataset is derived from the following sources. Users must comply with the respective license terms and attribution requirements. See the NOTICE file for full details.

OpenStreetMap © OpenStreetMap contributors — licensed under the Open Database License (ODbL) 1.0.

swisstopo — swissTLM3D © Federal Office of Topography swisstopo — swissTLM3D Strassen und Wege — licensed under the swisstopo Open Data License.

swisstopo — swissIMAGE 10 cm © Federal Office of Topography swisstopo — licensed under the swisstopo Open Data License.

Further Links

• mediaTUM
• DOI