Implement highway shields and interstate filtering

style/Makefile

@@ -1,15 +1,10 @@
-clean:
-	rm -rf sprites build icons/us_* rebusurance.zip
+clean_sprites:
+	rm -rf sprites
 
-rebusurance.zip:
-	curl -s -L https://github.com/1ec5/rebusurance/releases/download/v1.0.0/rebusurance-v1.0.0.zip --output rebusurance.zip
+clean: clean_sprites
+	rm -rf build
 
-
-build/rebusurance-v1.0.0: rebusurance.zip
-	unzip -q rebusurance.zip "*/image2d/*.svg" -d build
-
-sprites: build/rebusurance-v1.0.0
-	scripts/import_rebusurance.sh
+sprites: clean_sprites
 	mkdir -p sprites
 	npx spritezero sprites/sprite@2x icons/ --retina
 	npx spritezero sprites/sprite icons/

style/americana.js

@@ -3,6 +3,7 @@
 import config from "./config.js";
 
 import * as Util from "./js/util.js";
+import * as Shield from "./js/shield.js";
 
 import * as lyrBackground from "./layer/background.js";
 import * as lyrBoundary from "./layer/boundary.js";
@@ -68,6 +69,7 @@ americanaLayers.push(
   lyrRoad.primary.fill(),
   lyrRoad.trunk.fill(),
   lyrRoad.motorway.fill(),
+  lyrRoad.interstate.fill(),
 
   lyrRoad.motorwayLink.surface(),
   lyrRoad.trunkLink.surface(),
@@ -156,7 +158,11 @@ americanaLayers.push(
 
   lyrPark.label,
 
-  lyrHighwayShield.interstate,
+  lyrHighwayShield.motorway,
+  lyrHighwayShield.trunk,
+  lyrHighwayShield.primary,
+  lyrHighwayShield.secondary,
+  lyrHighwayShield.tertiary,
 
   lyrPlace.state,
   lyrPlace.city,
@@ -205,6 +211,10 @@ var map = new maplibregl.Map({
   attributionControl: false,
 });
 
+map.on("styleimagemissing", function (e) {
+  Shield.missingIconLoader(map, e);
+});
+
 map.addControl(
   new maplibregl.AttributionControl({
     customAttribution: