Traccar web interface supports multiple different map tile servers. Default map layer can be selected for the whole server by an admin user. Server-wide setting can be overridden for each user. Below you can find more information about all map layers available in Traccar GPS tracking server: OpenStreetMap (OSM) is a collaborative project to create a free editable map of the world. OSM layer is the default one in Traccar. It’s completely free, doesn’t require any API keys and can be used for any commercial purposes. Quality of map data varies in different areas because most of the data is collected by volunteers performing systematic ground surveys using tools such as a handheld GPS unit, a notebook, digital camera, or a voice recorder. Some government agencies have released official data on appropriate licenses which increases the quality in some geographical areas. Bing Maps is a web mapping service provided as a part of Microsoft’s Bing suite of search engines and powered by the Bing Maps for Enterprise framework. It requires API key and subject to Microsoft terms and conditions for the service. API key can be set in the server settings. Custom layers allows Traccar to use any tile server to retrieve map tiles. It requires URL in special format set in the server settings by admin user. Note that map data provided by third parties is a subject to terms and conditions and in some cases it might be illegal to use third party tile server without special permission or license from the service provider. Source.