diff --git a/index.html b/index.html
index 3b00eb4..3f3c2d2 100644
--- a/index.html
+++ b/index.html
@@ -58,6 +58,7 @@
       <div id="favorites-home" class="home-section" hidden>
         <div class="section-heading">
           <div><span class="section-heading__eyebrow">SCHNELLZUGRIFF</span><h2>Meine Haltestellen</h2></div>
+          <button id="notify-toggle" class="text-button" type="button" hidden>🔔 Störungsbenachrichtigungen aktivieren</button>
         </div>
         <div id="favorite-cards" class="favorite-cards"></div>
       </div>
@@ -191,5 +192,6 @@
   <script src="js/livemap.js"></script>
   <script src="js/tripmodal.js"></script>
   <script src="js/app.js"></script>
+  <div id="toast-container" class="toast-container" aria-live="polite"></div>
 </body>
 </html>
diff --git a/js/app.js b/js/app.js
index af61548..aba1432 100644
--- a/js/app.js
+++ b/js/app.js
@@ -2,10 +2,13 @@ const App = (() => {
   const FAVORITES_KEY = 'oepnv-navi:db-favorites';
   const LAST_STOP_KEY = 'oepnv-navi:db-last-stop';
   const RECENT_SEARCHES_KEY = 'oepnv-navi:db-recent-searches';
+  const SEEN_DISRUPTIONS_KEY = 'oepnv-navi:db-seen-disruptions';
+  const FAVORITES_POLL_MS = 30000;
 
   let currentStop = null;
   let departuresPollHandle = null;
   let departuresModeFilter = null;
+  let favoritesPollHandle = null;
 
   let journeyFrom = null;
   let journeyTo = null;
@@ -102,6 +105,7 @@ const App = (() => {
           <span>
             <strong>${escapeHtml(fav.name)}</strong>
             <small class="favorite-card__next" data-next-departure>Lade nächste Abfahrt…</small>
+            <small class="favorite-card__disruption" data-disruption hidden></small>
           </span>
           <span class="favorite-card__arrow">→</span>
         `;
@@ -115,32 +119,107 @@ const App = (() => {
     const home = document.getElementById('favorites-home');
     if (home) home.hidden = favorites.length === 0;
 
-    if (favorites.length > 0) loadFavoriteNextDepartures(favorites);
+    updateNotifyToggleVisibility(favorites.length > 0);
+
+    if (favorites.length > 0) {
+      loadFavoriteNextDepartures(favorites);
+      startFavoritesPolling();
+    } else {
+      stopFavoritesPolling();
+    }
+  }
+
+  // ---------- Störungs-Erkennung für Favoriten ("Störungs-Push") ----------
+  //
+  // Läuft im Hintergrund, solange Favoriten vorhanden sind (siehe
+  // startFavoritesPolling). Vergleicht bei jedem Poll die von /summary/departures
+  // gelieferten Störungen einer Haltestelle mit den zuletzt gesehenen (in
+  // localStorage gemerkt) und meldet nur wirklich NEUE Störungen - sonst würde
+  // bei jedem 30s-Poll erneut benachrichtigt werden, solange eine Störung andauert.
+
+  function loadSeenDisruptions() {
+    try { return JSON.parse(localStorage.getItem(SEEN_DISRUPTIONS_KEY)) || {}; }
+    catch (_) { return {}; }
+  }
+
+  function saveSeenDisruptions(map) {
+    localStorage.setItem(SEEN_DISRUPTIONS_KEY, JSON.stringify(map));
+  }
+
+  function disruptionKey(d) {
+    return d.id || `${d.type || ''}-${d.text || d.summary || ''}`;
+  }
+
+  function notifyNewDisruption(favName, disruption) {
+    const message = `${favName}: ${disruption.summary || 'Neue Störung'}`;
+    showToast(message, 'warning');
+
+    if (window.Notification && Notification.permission === 'granted') {
+      try {
+        new Notification('Störung bei ' + favName, {
+          body: disruption.summary || disruption.text || 'Es liegt eine neue Störungsmeldung vor.',
+          tag: `oepnv-navi-disruption-${favName}-${disruptionKey(disruption)}`,
+        });
+      } catch (err) {
+        console.error('Notification-Fehler:', err.message);
+      }
+    }
+  }
+
+  function renderFavoriteDisruption(card, favName, disruptions, seenMap, favId) {
+    const el = card.querySelector('[data-disruption]');
+    if (!el) return;
+
+    if (!disruptions || disruptions.length === 0) {
+      el.hidden = true;
+      el.textContent = '';
+      card.classList.remove('favorite-card--disrupted');
+      delete seenMap[favId];
+      return;
+    }
+
+    card.classList.add('favorite-card--disrupted');
+    el.hidden = false;
+    el.textContent = `⚠ ${disruptions[0].summary || 'Störung'}${disruptions.length > 1 ? ` (+${disruptions.length - 1} weitere)` : ''}`;
+
+    const previousKeys = new Set(seenMap[favId] || []);
+    disruptions.forEach((d) => {
+      const key = disruptionKey(d);
+      if (!previousKeys.has(key)) {
+        notifyNewDisruption(favName, d);
+      }
+    });
+    seenMap[favId] = disruptions.map(disruptionKey);
   }
 
   async function loadFavoriteNextDepartures(favorites) {
     const stations = favorites.map((f) => ({ id: f.id, source: f.source || 'vbb', name: f.name }));
+    const seenMap = loadSeenDisruptions();
+
     try {
       const { results } = await API.getSummaryDepartures(stations);
       results.forEach((r) => {
         const card = document.querySelector(`.favorite-card[data-fav-id="${CSS.escape(String(r.id))}"]`);
         if (!card) return;
         const el = card.querySelector('[data-next-departure]');
-        if (!el) return;
 
-        if (r.error || !r.nextDeparture) {
-          el.textContent = 'Keine Abfahrt gefunden';
-          return;
+        if (el) {
+          if (r.error || !r.nextDeparture) {
+            el.textContent = 'Keine Abfahrt gefunden';
+          } else {
+            const dep = r.nextDeparture;
+            const minutesUntil = dep.when ? Math.max(0, Math.round((new Date(dep.when) - new Date()) / 60000)) : null;
+            if (dep.cancelled) {
+              el.innerHTML = `<span class="favorite-card__cancelled">${escapeHtml(dep.line || '')} fällt aus</span>`;
+            } else {
+              el.textContent = `${dep.line || '?'} → ${dep.direction || ''} · ${minutesUntil != null ? minutesUntil + ' min' : ''}`;
+            }
+          }
         }
 
-        const dep = r.nextDeparture;
-        const minutesUntil = dep.when ? Math.max(0, Math.round((new Date(dep.when) - new Date()) / 60000)) : null;
-        if (dep.cancelled) {
-          el.innerHTML = `<span class="favorite-card__cancelled">${escapeHtml(dep.line || '')} fällt aus</span>`;
-        } else {
-          el.textContent = `${dep.line || '?'} → ${dep.direction || ''} · ${minutesUntil != null ? minutesUntil + ' min' : ''}`;
-        }
+        renderFavoriteDisruption(card, r.name || '', r.disruptions, seenMap, r.id);
       });
+      saveSeenDisruptions(seenMap);
     } catch (err) {
       // Stillschweigend ignorieren - die Karten zeigen dann weiterhin "Lade..."
       // bzw. der Nutzer bekommt die Abfahrten trotzdem beim Antippen der Karte.
@@ -148,6 +227,80 @@ const App = (() => {
     }
   }
 
+  function startFavoritesPolling() {
+    if (favoritesPollHandle) clearInterval(favoritesPollHandle);
+    favoritesPollHandle = setInterval(() => {
+      const favorites = loadFavorites();
+      if (favorites.length > 0) loadFavoriteNextDepartures(favorites);
+      else stopFavoritesPolling();
+    }, FAVORITES_POLL_MS);
+  }
+
+  function stopFavoritesPolling() {
+    if (favoritesPollHandle) {
+      clearInterval(favoritesPollHandle);
+      favoritesPollHandle = null;
+    }
+  }
+
+  // ---------- Toast (kurze, unaufdringliche In-App-Meldung) ----------
+
+  function showToast(message, variant = 'info') {
+    const container = document.getElementById('toast-container');
+    if (!container) return;
+
+    const toast = document.createElement('div');
+    toast.className = `toast toast--${variant}`;
+    toast.textContent = message;
+    container.appendChild(toast);
+
+    requestAnimationFrame(() => toast.classList.add('is-visible'));
+
+    setTimeout(() => {
+      toast.classList.remove('is-visible');
+      setTimeout(() => toast.remove(), 300);
+    }, 6000);
+  }
+
+  // ---------- Browser-Benachrichtigungen an/aus ----------
+
+  function updateNotifyToggleVisibility(hasFavorites) {
+    const btn = document.getElementById('notify-toggle');
+    if (!btn) return;
+    if (!hasFavorites || !window.Notification) {
+      btn.hidden = true;
+      return;
+    }
+    btn.hidden = false;
+    if (Notification.permission === 'granted') {
+      btn.textContent = '🔔 Benachrichtigungen aktiv';
+      btn.classList.add('is-active');
+      btn.disabled = true;
+    } else if (Notification.permission === 'denied') {
+      btn.textContent = '🔕 Benachrichtigungen blockiert';
+      btn.classList.remove('is-active');
+      btn.disabled = true;
+    } else {
+      btn.textContent = '🔔 Störungsbenachrichtigungen aktivieren';
+      btn.classList.remove('is-active');
+      btn.disabled = false;
+    }
+  }
+
+  function initNotifications() {
+    const btn = document.getElementById('notify-toggle');
+    if (!btn || !window.Notification) return;
+    btn.addEventListener('click', async () => {
+      try {
+        await Notification.requestPermission();
+      } catch (err) {
+        console.error('Notification-Permission-Fehler:', err.message);
+      }
+      updateNotifyToggleVisibility(loadFavorites().length > 0);
+    });
+    updateNotifyToggleVisibility(loadFavorites().length > 0);
+  }
+
   function updateFavoriteButton() {
     const btn = document.getElementById('favorite-toggle');
     if (!currentStop) {
@@ -831,6 +984,7 @@ const App = (() => {
     initJourneyPlanner();
     initNearby();
     initNearbyDisruptions();
+    initNotifications();
     renderFavoriteChips();
     renderRecentSearches();
 
diff --git a/js/livemap.js b/js/livemap.js
index 79fc041..281330f 100644
--- a/js/livemap.js
+++ b/js/livemap.js
@@ -20,6 +20,7 @@ const LiveMap = (() => {
   let radarPollHandle = null;
   let tripPollHandle = null;
   let currentTripId = null;
+  let isolatedMarker = null; // persistenter Marker im Isolations-Modus, wird nur aktualisiert statt neu erzeugt
   let isolatedVehicleMeta = null; // { line, color, textColor } für die Banner-Anzeige
   let getModesParam = () => null; // wird von außen (ModeFilter) gesetzt
 
@@ -59,6 +60,11 @@ const LiveMap = (() => {
     return geojson.features.map((f) => [f.geometry.coordinates[1], f.geometry.coordinates[0]]);
   }
 
+  function vehiclePopupHtml(v) {
+    return `<strong>${v.line || 'Linie unbekannt'}</strong><br>${v.direction || ''}<br>` +
+      `<small>Nächster Halt: ${v.nextStopover || '–'}</small>`;
+  }
+
   // ---------- Radar-Modus (Standard: alle Fahrzeuge im Ausschnitt) ----------
 
   async function refreshRadar() {
@@ -130,22 +136,58 @@ const LiveMap = (() => {
       return;
     }
 
-    radarLayer.clearLayers();
     const v = data.vehicles[0];
-    if (v && v.latitude != null && v.longitude != null) {
-      const marker = L.marker([v.latitude, v.longitude], { icon: vehicleIcon(v.line, v.color, v.textColor) });
-      marker.bindPopup(`<strong>${v.line || ''}</strong><br>${v.direction || ''}<br><small>Nächster Halt: ${v.nextStopover || '–'}</small>`);
-      marker.addTo(radarLayer);
+    if (!v || v.latitude == null || v.longitude == null) {
+      // Fahrzeug gerade nicht meldend (z.B. kurzzeitig aus der Live-Erfassung) -
+      // Marker stehen lassen statt zu entfernen, nächster Poll aktualisiert ihn wieder.
+      return;
     }
+
+    // WICHTIG: Marker wird wiederverwendet statt bei jedem Poll neu erzeugt zu
+    // werden. Vorher wurde hier radarLayer.clearLayers() + ein komplett neuer
+    // Marker angelegt - das hat ein ggf. geöffnetes Popup jedes Mal geschlossen,
+    // sodass die Fahrzeuginfo (Richtung, nächster Halt) nach dem ersten Klick nie
+    // wieder aktualisiert im UI sichtbar wurde.
+    if (isolatedMarker) {
+      isolatedMarker.setLatLng([v.latitude, v.longitude]);
+      isolatedMarker.setIcon(vehicleIcon(v.line, v.color, v.textColor));
+      isolatedMarker.setPopupContent(vehiclePopupHtml(v));
+    } else {
+      isolatedMarker = L.marker([v.latitude, v.longitude], { icon: vehicleIcon(v.line, v.color, v.textColor) });
+      isolatedMarker.bindPopup(vehiclePopupHtml(v));
+      isolatedMarker.addTo(radarLayer);
+    }
+
+    isolatedVehicleMeta = { line: v.line, color: v.color, textColor: v.textColor };
+    updateIsolationBanner();
   }
 
   async function isolateVehicle(vehicle) {
     if (!vehicle || !vehicle.tripId) return;
+
+    // Das ursprüngliche Leaflet-Popup des angeklickten Radar-Markers (aus
+    // bindPopup in refreshRadar) schließen, bevor wir in den Isolations-Modus
+    // wechseln - sonst blitzt es kurz auf und verschwindet dann kommentarlos.
+    map.closePopup();
+
     setMode('isolated');
     currentTripId = vehicle.tripId;
+    isolatedMarker = null;
+    radarLayer.clearLayers();
+
     isolatedVehicleMeta = { line: vehicle.line, color: vehicle.color, textColor: vehicle.textColor };
     updateIsolationBanner();
 
+    // Sofort einen Marker mit den Daten aus dem Klick anzeigen (nicht erst auf
+    // den ersten Poll warten) und direkt öffnen, damit man die Fahrzeuginfo
+    // ohne weiteren Klick sieht.
+    isolatedMarker = L.marker([vehicle.latitude, vehicle.longitude], {
+      icon: vehicleIcon(vehicle.line, vehicle.color, vehicle.textColor),
+    });
+    isolatedMarker.bindPopup(vehiclePopupHtml(vehicle));
+    isolatedMarker.addTo(radarLayer);
+    isolatedMarker.openPopup();
+
     routeLayer.clearLayers();
     try {
       const trip = await API.getTrip(vehicle.tripId, { polyline: true });
@@ -159,13 +201,13 @@ const LiveMap = (() => {
       console.error('Trip-Polyline-Fehler:', err.message);
     }
 
-    refreshIsolated();
     if (radarPollHandle) clearInterval(radarPollHandle);
     radarPollHandle = setInterval(refreshIsolated, 10000);
   }
 
   function clearIsolation() {
     currentTripId = null;
+    isolatedMarker = null;
     isolatedVehicleMeta = null;
     updateIsolationBanner();
     startRadar();
@@ -211,12 +253,19 @@ const LiveMap = (() => {
 
     if (data.currentLocation) {
       const pos = [data.currentLocation.latitude, data.currentLocation.longitude];
+      const popupHtml = `<strong>${data.line || ''}</strong><br>→ ${data.direction || ''}`;
       if (tripMarker) {
         tripMarker.setLatLng(pos);
+        tripMarker.setIcon(vehicleIcon(data.line, data.color, data.textColor));
+        // setPopupContent statt erneutem bindPopup, sonst schließt sich ein
+        // gerade geöffnetes Popup bei jedem Poll wieder (gleicher Fehler wie
+        // im Isolations-Modus).
+        if (tripMarker.getPopup()) tripMarker.setPopupContent(popupHtml);
+        else tripMarker.bindPopup(popupHtml);
       } else {
         tripMarker = L.marker(pos, { icon: vehicleIcon(data.line, data.color, data.textColor) }).addTo(routeLayer);
+        tripMarker.bindPopup(popupHtml);
       }
-      tripMarker.bindPopup(`<strong>${data.line || ''}</strong><br>→ ${data.direction || ''}`);
     }
   }
 
diff --git a/styles.css b/styles.css
index 3ff200d..db2ae98 100644
--- a/styles.css
+++ b/styles.css
@@ -852,6 +852,55 @@ button:active { transform: translateY(1px); }
 .favorite-card small { color: var(--ink-muted); font-size: 11px; margin-top: 3px; }
 .favorite-card__cancelled { color: var(--signal-red); font-weight: 600; }
 .favorite-card__arrow { color: var(--ink-muted); font-size: 18px; }
+
+/* Störungs-Hinweis auf Favoriten-Karten ("Störungs-Push") */
+.favorite-card--disrupted { border-color: rgba(255,93,108,.5); }
+.favorite-card__disruption {
+  color: var(--signal-red) !important;
+  font-weight: 600;
+  margin-top: 4px;
+}
+
+.notify-toggle, #notify-toggle.is-active { color: var(--signal-green); }
+#notify-toggle:disabled { cursor: default; opacity: .8; }
+
+/* ============================================================
+   Toast-Benachrichtigungen (z.B. für neue Störungen bei Favoriten)
+   ============================================================ */
+
+.toast-container {
+  position: fixed;
+  left: 50%;
+  bottom: 24px;
+  transform: translateX(-50%);
+  z-index: 200;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  align-items: center;
+  width: min(420px, calc(100vw - 32px));
+  pointer-events: none;
+}
+
+.toast {
+  background: var(--panel-raised);
+  border: 1px solid var(--line);
+  border-left: 3px solid var(--signal-amber);
+  color: var(--ink);
+  border-radius: var(--radius);
+  padding: 12px 16px;
+  font-size: 13px;
+  line-height: 1.4;
+  box-shadow: 0 8px 24px rgba(0,0,0,.35);
+  width: 100%;
+  opacity: 0;
+  transform: translateY(12px);
+  transition: opacity .25s ease, transform .25s ease;
+}
+
+.toast.is-visible { opacity: 1; transform: translateY(0); }
+.toast--warning { border-left-color: var(--signal-red); }
+.toast--info { border-left-color: var(--signal-amber); }
 .nearby-preview { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 8px; }
 .nearby-preview__item {
   display: flex; justify-content: space-between; align-items: center; gap: 10px; text-align: left;
@@ -1437,6 +1486,7 @@ button:active { transform: translateY(1px); }
   .mobile-nav__item span { font-size: 18px; line-height: 1.1; }
   .mobile-nav__item small { font-size: 10px; }
   .mobile-nav__item.is-active { color: var(--signal-amber); }
+  .toast-container { bottom: calc(64px + env(safe-area-inset-bottom) + 12px); }
 }
 
 @media (max-width: 430px) {