emergency: add nearest-city emergency vehicle routes

config.js

@@ -118,6 +118,29 @@ window.CONFIG = {
         // weatherSimProfile: { rain: { code: 80, tempC: 9, precipMm: 2.0, windKmh: 28 } }
     },
 
+    // ------------------------------------------------------------------
+    // Emergency vehicles
+    // ------------------------------------------------------------------
+    // Emergency vehicles start from the nearest city/town to CONFIG.location
+    // and drive a selected secondary/primary road chain out and back. The
+    // route selection is intentionally conservative: it uses already loaded
+    // road chains and does not run a full routing engine.
+    emergencyVehicles: {
+        enabled: true,
+        count: 3,
+        speedKmh: 85,
+        minKm: 40,
+        maxKm: 80,
+        rankMax: 1,             // 0=city, 1=town
+        color: [0.22, 0.55, 1.0],
+        flashHz: 2.2,
+        nightOnly: true,
+        bright: 1.35
+        // emergencyVehicles: { enabled: false }
+        // emergencyVehicles: { count: 6, speedKmh: 110, minKm: 25, maxKm: 120 }
+        // emergencyVehicles: { color: [1.0, 0.18, 0.12], flashHz: 3.0 }
+    },
+
     // ------------------------------------------------------------------
     // Weather effects
     // ------------------------------------------------------------------