Canada Basemap – Transportation (CBMT) – Vector Tile EPSG: 3978 (NAD83 Canada Atlas Lambert)

The Canada Basemap – Transportation (CBMT) is a vector tile service that provides spatial reference context with an emphasis on transportation networks across Canada. It is designed especially for use as a background layer in a web mapping application or geographic information system (GIS).

Access: Access is free of charge under the terms of the Open Government Licence - Canada.

Data Sources: Data for the CBMT is sourced from multiple datasets.
- Topographic data of Canada - CanVec Series
- “Automatically Extracted Buildings” GeoBase (a raw digital product in vector format automatically extracted from airborne Lidar data, high-resolution optical imagery or other sources.)
- Open Street Map (OSM) data available under the Open Database License (https://www.openstreetmap.org/copyright).
- Official names from the Canadian Geographical Names Database (CGNDB).

Geographic Coverage: CBMT covers the entire geographic area of Canada and some major transportation routes and cities in the northern States of the USA.

Data Update Frequency: Updates are applied monthly to reflect the latest updates in the source datasets.

Projection: Data is provided in the EPSG:3978 (NAD83 Canada Atlas Lambert) projected coordinate system.

Layer Access:
- CBMT is accessible via the ArcGIS Online item link with the applied style or it can also be accessed directly with the default style using the following Vector Tile Server:
https://tiles.arcgis.com/tiles/HsjBaDykC1mjhXz9/arcgis/rest/services/CBMT_CBCT_3978_V_OSM/VectorTileServer
- In QGIS or other applications that require the style JSON, the following link can be used:
https://arcgis.com/sharing/rest/content/items/708e92c1f00941e3af3dd3c092ae4a0a/resources/styles/root.json

Use Cases: This layer is suitable for use in any map as a basemap layer and can be modified to meet the needs of the project by editing the JSON style in the Vector Tile Style editor.

Additional Versions:
- A geometry-only version (CBMT3978GEOM) and a text-only version (CBMT3978TXT) are available.
- French versions of the basemap are accessible via the Carte de base du Canada - Transport 3978 V (CBCT3978).