+ attribution: '© <a href="https://www.openstreetmap.org/copyright" target="_blank">OpenStreetMap</a> contributors. Tiles courtesy of <a href="http://hot.openstreetmap.org/" target="_blank">Humanitarian OpenStreetMap Team</a>'
+ }
+});
+
+L.OSM.TracestrackTopo = L.OSM.TileLayer.extend({
+ options: {
+ url: 'https://tile.tracestrack.com/topo__/{z}/{x}/{y}.png?key={apikey}',
+ maxZoom: 19,
+ attribution: '© <a href="https://www.openstreetmap.org/copyright" target="_blank">OpenStreetMap</a> contributors. Tiles courtesy of <a href="https://www.tracestrack.com/" target="_blank">Tracestrack Maps</a>'
+ }
+});
+
+L.OSM.GPS = L.OSM.TileLayer.extend({
+ options: {
+ url: 'https://gps.tile.openstreetmap.org/lines/{z}/{x}/{y}.png',
+ maxZoom: 21,
+ maxNativeZoom: 20,
+ subdomains: 'abc'