diff --git a/App/Don_t_Deploy/2026-07-11-class-modules-audio-info.sql b/App/Don_t_Deploy/2026-07-11-class-modules-audio-info.sql
new file mode 100644
index 0000000..f28b0d8
--- /dev/null
+++ b/App/Don_t_Deploy/2026-07-11-class-modules-audio-info.sql
@@ -0,0 +1,7 @@
+-- ============================================================
+-- class_modules.audio_info: Lehrer-Schalter für den Vorlese-Modus
+-- (Audio-Info-Modus in Sims, derzeit Tourismustal). Default AN.
+-- Stand: 2026-07-11 · Atlas · idempotent (MariaDB IF NOT EXISTS)
+-- ============================================================
+ALTER TABLE class_modules
+  ADD COLUMN IF NOT EXISTS audio_info TINYINT(1) NOT NULL DEFAULT 1;
diff --git a/App/pages/tourismustal.php b/App/pages/tourismustal.php
index 5281c4d..713baa7 100644
--- a/App/pages/tourismustal.php
+++ b/App/pages/tourismustal.php
@@ -19,6 +19,7 @@ $db = getDB();
 $sessionId = $_COOKIE['ggs_session'] ?? null;
 $mode = 'free';
 $easy = false;
+$audioInfo = true;   // Vorlese-Modus: Lehrer kann ihn pro Klasse sperren
 
 if ($sessionId) {
     $stmt = $db->prepare('SELECT class_id, display_name FROM student_sessions WHERE id = ?');
@@ -26,10 +27,13 @@ if ($sessionId) {
     $sess = $stmt->fetch(PDO::FETCH_ASSOC);
     if ($sess && !empty($sess['class_id'])) {
         $classId = (int)$sess['class_id'];
-        $cm = $db->prepare('SELECT mode FROM class_modules WHERE class_id = ? AND module_id = ?');
+        $cm = $db->prepare('SELECT mode, audio_info FROM class_modules WHERE class_id = ? AND module_id = ?');
         $cm->execute([$classId, 'tourismustal']);
         $cmRow = $cm->fetch(PDO::FETCH_ASSOC);
         $mode = $cmRow ? $cmRow['mode'] : 'locked';
+        if ($cmRow !== false && array_key_exists('audio_info', (array)$cmRow)) {
+            $audioInfo = !empty($cmRow['audio_info']);
+        }
         $so = $db->prepare(
             'SELECT sm.mode FROM student_modules sm
              JOIN students s ON s.id = sm.student_id
@@ -80,10 +84,12 @@ $modeJs      = json_encode($mode);
 $easyJs      = $easy ? 'true' : 'false';
 $sessionIdJs = json_encode($sessionId);
 
+$audioInfoJs = $audioInfo ? 'true' : 'false';
 $injection =
     "window.TT_SESSION_MODE = {$modeJs};\n" .
     "window.TT_SESSION_ID = {$sessionIdJs};\n" .
     "window.STUDENT_EASY = {$easyJs};\n" .
+    "window.TT_FEATURES = { audioInfo: {$audioInfoJs} };\n" .
     "window.TT_API_BASE = '" . BASE_PATH . "/php/api';";
 
 if (strpos($html, '/*__TOURISMUSTAL_INJECTION__*/') !== false) {
diff --git a/App/php/api/modules.php b/App/php/api/modules.php
index 4a2b18d..fda8520 100644
--- a/App/php/api/modules.php
+++ b/App/php/api/modules.php
@@ -52,7 +52,7 @@ if ($method === 'GET') {
         $classId = $session['class_id'];
         $classMap = [];
         $settings = $db->fetchAll(
-            'SELECT module_id, mode, current_level, quiz_enabled, due_date, started_at, paused
+            'SELECT module_id, mode, current_level, quiz_enabled, audio_info, due_date, started_at, paused
              FROM class_modules WHERE class_id = ?', [$classId]);
         foreach ($settings as $s) $classMap[$s['module_id']] = $s;
 
@@ -108,6 +108,7 @@ if ($method === 'GET') {
                 'mode'                => $mode,
                 'forcedLevel'         => ($mode === 'teacher_started' && $cm) ? (int)($cm['current_level'] ?? 1) : null,
                 'quizEnabled'         => (bool)($cm['quiz_enabled'] ?? 0),
+                'audioInfo'           => (bool)($cm['audio_info'] ?? 1),
                 'dueDate'             => $cm['due_date'] ?? null,
                 'paused'              => (bool)($cm['paused'] ?? 0),
                 'assignmentCompleted' => $assignmentCompleted,
@@ -129,7 +130,7 @@ if ($method === 'GET') {
 
     // Klassen-Defaults laden (inkl. Level + Pause-Status für die Lehrer-UI)
     $settings = $db->fetchAll(
-        'SELECT module_id, mode, current_level, paused, due_date, started_at FROM class_modules WHERE class_id = ?',
+        'SELECT module_id, mode, current_level, paused, audio_info, due_date, started_at FROM class_modules WHERE class_id = ?',
         [$classId]
     );
     $classMap = [];
@@ -191,6 +192,7 @@ if ($method === 'GET') {
                 'classMode'    => $classMap[$mod['id']] ?? 'locked',
                 'currentLevel' => $meta ? (int)($meta['current_level'] ?? 1) : 1,
                 'paused'       => $meta ? (bool)($meta['paused'] ?? 0) : false,
+                'audioInfo'    => $meta ? (bool)($meta['audio_info'] ?? 1) : true,
                 'dueDate'      => $meta['due_date'] ?? null,
                 'startedAt'    => $meta['started_at'] ?? null,
             ];
@@ -264,6 +266,18 @@ if ($method === 'POST') {
         Response::ok();
     }
 
+    // Vorlese-Modus (Audio-Info) für die Klasse erlauben/sperren
+    if ($action === 'set_audio_info') {
+        $on = !empty($body['enabled']) ? 1 : 0;
+        $db->execute(
+            'INSERT INTO class_modules (class_id, module_id, enabled, audio_info)
+             VALUES (?, ?, 1, ?)
+             ON DUPLICATE KEY UPDATE audio_info = VALUES(audio_info)',
+            [$classId, $moduleId, $on]
+        );
+        Response::ok();
+    }
+
     // Auftrag pausieren / fortsetzen
     if ($action === 'pause' || $action === 'resume') {
         $paused = $action === 'pause' ? 1 : 0;
diff --git a/App/sims/tourismustal/css/style.css b/App/sims/tourismustal/css/style.css
index 1564d7c..f7480b2 100644
--- a/App/sims/tourismustal/css/style.css
+++ b/App/sims/tourismustal/css/style.css
@@ -459,3 +459,11 @@ button.secondary {
 #infoBanner .ib-icon { font-size: 20px; }
 #infoBanner .ib-hint { color: var(--muted); font-size: 12px; margin-left: 4px; white-space: nowrap; }
 @keyframes ibSlide { from { transform: translate(-50%, -14px); opacity: 0; } to { transform: translate(-50%, 0); opacity: 1; } }
+
+/* ℹ-Button im Baumenü */
+.build-item { position: relative; }
+.build-item .bi-menu-info {
+  background: none; border: none; cursor: pointer; font-size: 14px;
+  padding: 4px 6px; opacity: .65; flex-shrink: 0;
+}
+.build-item .bi-menu-info:hover { opacity: 1; }
diff --git a/App/sims/tourismustal/js/data.js b/App/sims/tourismustal/js/data.js
index 2e43769..4fb2d81 100644
--- a/App/sims/tourismustal/js/data.js
+++ b/App/sims/tourismustal/js/data.js
@@ -60,7 +60,7 @@ export const BUILDINGS = {
   },
   bikepark: {
     name: 'Bikepark', emoji: '🚵', cost: 10000, upkeep: 80,
-    zone: 'mid', staff: 2, summerCap: 160, trailLen: 5, size: 2,
+    zone: 'mid', staff: 2, summerCap: 160, trailLen: 3, size: 2,
     desc: 'Großes Basis-Areal (2×2 Felder) mit Flowtrails: bis 160 Sommergäste. Braucht eine Bahn in der Nähe (max. 4 Felder), die die Bikes hinaufbringt.',
   },
   ropes: {
diff --git a/App/sims/tourismustal/js/iso.js b/App/sims/tourismustal/js/iso.js
index fbe3b65..5e366d9 100644
--- a/App/sims/tourismustal/js/iso.js
+++ b/App/sims/tourismustal/js/iso.js
@@ -1392,9 +1392,11 @@ export class IsoRenderer {
     const s = this.state;
     if (!s.buildings.some(b => b.type === 'access')) return;
     const ctx = this.ctx;
-    let f = (this.simTime / 26000) % 1;
+    const phase = (this.simTime / 26000) % 1;
+    let f = phase;
     if (f > 0.5) f = 1 - f;
     f *= 2;
+    const dir = phase <= 0.5 ? 1 : -1;   // 1 = fährt nach rechts unten, −1 = zurück
     const c = CORE.c0 + 0.5 + f * (CORE.c1 - CORE.c0 - 1);
     const r = ROAD_ROW;
     const tile = s.map[r][Math.min(MAP_COLS - 1, Math.round(c))];
@@ -1432,26 +1434,39 @@ export class IsoRenderer {
       ctx.lineTo(...P(b, W, winT)); ctx.lineTo(...P(a, W, winT));
       ctx.closePath(); ctx.fill();
     }
-    // Türlinie
+    // Türlinie (Tür sitzt Richtung Front)
     ctx.strokeStyle = this._shade(body, -34); ctx.lineWidth = 0.8;
-    ctx.beginPath(); ctx.moveTo(...P(L * 0.06, W)); ctx.lineTo(...P(L * 0.06, W, winB)); ctx.stroke();
+    ctx.beginPath(); ctx.moveTo(...P(L * 0.06 * dir, W)); ctx.lineTo(...P(L * 0.06 * dir, W, winB)); ctx.stroke();
 
-    // Front (Fahrtrichtung, +L)
+    // Sichtbares Ende (+L): je nach Fahrtrichtung FRONT oder HECK
     ctx.fillStyle = body;
     ctx.beginPath();
     ctx.moveTo(...P(L, W)); ctx.lineTo(...P(L, -W));
     ctx.lineTo(...P(L, -W, H)); ctx.lineTo(...P(L, W, H));
     ctx.closePath(); ctx.fill();
-    // Windschutzscheibe
-    ctx.fillStyle = 'rgba(223,232,236,0.92)';
-    ctx.beginPath();
-    ctx.moveTo(...P(L, W * 0.7, winB)); ctx.lineTo(...P(L, -W * 0.7, winB));
-    ctx.lineTo(...P(L, -W * 0.7, winT)); ctx.lineTo(...P(L, W * 0.7, winT));
-    ctx.closePath(); ctx.fill();
-    // Scheinwerfer
-    ctx.fillStyle = '#ffe6a0';
-    const hl1 = P(L, W * 0.6, H * 0.3), hl2 = P(L, -W * 0.6, H * 0.3);
-    ctx.beginPath(); ctx.arc(hl1[0], hl1[1], 1.1, 0, 7); ctx.arc(hl2[0], hl2[1], 1.1, 0, 7); ctx.fill();
+    if (dir === 1) {
+      // Windschutzscheibe
+      ctx.fillStyle = 'rgba(223,232,236,0.92)';
+      ctx.beginPath();
+      ctx.moveTo(...P(L, W * 0.7, winB)); ctx.lineTo(...P(L, -W * 0.7, winB));
+      ctx.lineTo(...P(L, -W * 0.7, winT)); ctx.lineTo(...P(L, W * 0.7, winT));
+      ctx.closePath(); ctx.fill();
+      // Scheinwerfer
+      ctx.fillStyle = '#ffe6a0';
+      const hl1 = P(L, W * 0.6, H * 0.3), hl2 = P(L, -W * 0.6, H * 0.3);
+      ctx.beginPath(); ctx.arc(hl1[0], hl1[1], 1.1, 0, 7); ctx.arc(hl2[0], hl2[1], 1.1, 0, 7); ctx.fill();
+    } else {
+      // Heckscheibe (kleiner, höher gesetzt)
+      ctx.fillStyle = 'rgba(223,232,236,0.85)';
+      ctx.beginPath();
+      ctx.moveTo(...P(L, W * 0.55, winB + 1.5)); ctx.lineTo(...P(L, -W * 0.55, winB + 1.5));
+      ctx.lineTo(...P(L, -W * 0.55, winT)); ctx.lineTo(...P(L, W * 0.55, winT));
+      ctx.closePath(); ctx.fill();
+      // rote Rücklichter
+      ctx.fillStyle = '#c0392b';
+      const tl1 = P(L, W * 0.68, H * 0.3), tl2 = P(L, -W * 0.68, H * 0.3);
+      ctx.beginPath(); ctx.arc(tl1[0], tl1[1], 1.2, 0, 7); ctx.arc(tl2[0], tl2[1], 1.2, 0, 7); ctx.fill();
+    }
     // Stoßstange
     ctx.strokeStyle = '#2f3e46'; ctx.lineWidth = 1.4;
     ctx.beginPath(); ctx.moveTo(...P(L, W, H * 0.16)); ctx.lineTo(...P(L, -W, H * 0.16)); ctx.stroke();
@@ -1478,18 +1493,19 @@ export class IsoRenderer {
       ctx.quadraticCurveTo(wp[0], wp[1] - 4.2, wp[0] + 3.7, wp[1] + 1);
       ctx.stroke();
     }
-    // Türgriff
+    // Türgriff (Richtung Front)
     ctx.strokeStyle = this._shade(body, -42); ctx.lineWidth = 1;
-    const gh = P(L * 0.16, W, winB * 0.7);
+    const gh = P(L * 0.16 * dir, W, winB * 0.7);
     ctx.beginPath(); ctx.moveTo(gh[0] - 2, gh[1]); ctx.lineTo(gh[0] + 2, gh[1]); ctx.stroke();
-    // Außenspiegel vorne
-    ctx.fillStyle = '#2f3e46';
-    const mir = P(L, W * 1.4, H * 0.62);
-    ctx.beginPath(); ctx.arc(mir[0], mir[1], 1.3, 0, 7); ctx.fill();
-    // Rücklicht hinten
-    ctx.fillStyle = '#c0392b';
-    const rl = P(-L, W, H * 0.3);
-    ctx.beginPath(); ctx.arc(rl[0], rl[1], 1.2, 0, 7); ctx.fill();
+    if (dir === 1) {
+      // Außenspiegel vorne + Rücklicht am hinteren (verdeckten) Ende
+      ctx.fillStyle = '#2f3e46';
+      const mir = P(L, W * 1.4, H * 0.62);
+      ctx.beginPath(); ctx.arc(mir[0], mir[1], 1.3, 0, 7); ctx.fill();
+      ctx.fillStyle = '#c0392b';
+      const rl = P(-L, W, H * 0.3);
+      ctx.beginPath(); ctx.arc(rl[0], rl[1], 1.2, 0, 7); ctx.fill();
+    }
     ctx.lineWidth = 1;
   }
 
diff --git a/App/sims/tourismustal/js/main.js b/App/sims/tourismustal/js/main.js
index 8384d7e..e80da5a 100644
--- a/App/sims/tourismustal/js/main.js
+++ b/App/sims/tourismustal/js/main.js
@@ -123,7 +123,8 @@ function onTileTap(c, r) {
 
   const check = canPlace(state, type, c, r);
   if (!check.ok) {
-    ui.toast(`❌ ${check.reason}`);
+    // Ablehnung erklärt IMMER auch die Bauregeln des Gebäudes
+    ui.toast(`❌ ${check.reason}  💡 ${BUILDINGS[type].name}: ${BUILDINGS[type].desc}`, 7000);
     audio.error();
     telemetry.log('build_rejected', { type, c, r, reason: check.reason });
     return;
diff --git a/App/sims/tourismustal/js/model.js b/App/sims/tourismustal/js/model.js
index ce2cd1e..a261aeb 100644
--- a/App/sims/tourismustal/js/model.js
+++ b/App/sims/tourismustal/js/model.js
@@ -347,12 +347,13 @@ export function place(state, type, c, r) {
     }
   }
   if (def.trailLen) {
-    // Bike-Trails schlängeln sich talwärts unter der Basisstation (Bikepark).
-    // Sichtbar groß, aber nur 1 Feld Gebäude – und sie kosten extra Natur.
+    // Bike-Trails ziehen sich hangAUFwärts über der Basisstation – gleiche
+    // Richtung wie die Lift-Pisten (die Bahn bringt die Bikes hinauf, die
+    // Trails führen zurück herunter). Sie kosten extra Natur.
     let cc = c;
     for (let i = 1; i <= def.trailLen; i++) {
       cc += (i % 2 ? 1 : -1);
-      const t = state.map[r + i]?.[Math.max(1, Math.min(MAP_COLS - 2, cc))];
+      const t = state.map[r - i]?.[Math.max(1, Math.min(MAP_COLS - 2, cc))];
       if (t && t.terrain !== 'water' && !t.building) {
         state.trails.push({ c: t.c, r: t.r, owner: { c, r } });
       }
diff --git a/App/sims/tourismustal/js/ui.js b/App/sims/tourismustal/js/ui.js
index 92c0c5e..859dc33 100644
--- a/App/sims/tourismustal/js/ui.js
+++ b/App/sims/tourismustal/js/ui.js
@@ -2,7 +2,7 @@
 // Auto-Pause), Meldungs-Log, Graphen, Skipass-Regler, Ziele, Toasts,
 // Onboarding, Szenenwahl und Topbar-Buttons.
 
-import { BUILDINGS } from './data.js';
+import { BUILDINGS, BUILD_INFO, KNOWLEDGE } from './data.js';
 import { seasonOfDay, DAYS_PER_YEAR } from './model.js';
 import { telemetry } from './telemetry.js';
 import { audio } from './audio.js';
@@ -18,7 +18,11 @@ export class UI {
     this.cardOpen = false;
     this.speedBeforeCard = 1;
     this.collectedCards = [];
-    this.infoMode = localStorage.getItem('tt_infomode') || 'read';
+    // Vorlese-Modus: kann von der Lehrperson pro Klasse gesperrt werden
+    this.audioAllowed = window.TT_FEATURES?.audioInfo !== false;
+    this.infoMode = this.audioAllowed
+      ? (localStorage.getItem('tt_infomode') || 'read')
+      : 'read';
     this.activeBuild = null;
     this.toastTimer = null;
 
@@ -77,11 +81,37 @@ export class UI {
     el.innerHTML = `
       <span class="emoji">${emoji}</span>
       <span class="info"><b>${name}</b><small>${desc}</small></span>
-      <span class="cost">${cost}</span>`;
+      <span class="cost">${cost}</span>
+      <button class="bi-menu-info" title="Alles über: ${name}">ℹ️</button>`;
     el.addEventListener('click', () => this._toggleBuild(type, el));
+    el.querySelector('.bi-menu-info').addEventListener('click', e => {
+      e.stopPropagation();               // nicht in den Baumodus wechseln
+      audio.click();
+      this.showBuildInfo(type);
+    });
     return el;
   }
 
+  // ℹ im Baumenü: erklärt ein Bauwerk VOR dem Bau – Wirkung, Kosten,
+  // Lage-Regeln und das Lehrplan-Wissen dazu.
+  showBuildInfo(type) {
+    const def = BUILDINGS[type];
+    const info = BUILD_INFO[type];
+    const know = (KNOWLEDGE[type] || [])
+      .map(k => `📚 ${k.term}: ${k.text}`).join('\n\n');
+    const staffLine = def.staff ? ` + ${def.staff} Angestellte` : '';
+    this.showCard({
+      id: `menuinfo-${type}`, transient: true, forceModal: true,
+      icon: def.emoji, sound: 'none',
+      title: def.name,
+      text: `${def.desc}\n\nBaukosten: ${def.cost.toLocaleString('de-AT')} € · `
+        + `laufend: ${def.upkeep} €/Tag${staffLine}.`
+        + (info ? `\n\n${info.text}` : '')
+        + (know ? `\n\n${know}` : ''),
+    });
+    telemetry.log('menu_info', { type });
+  }
+
   _toggleBuild(type, el) {
     audio.click();
     document.querySelectorAll('.build-item').forEach(i => i.classList.remove('active'));
@@ -141,6 +171,7 @@ export class UI {
       $('playerPanel').classList.toggle('hidden');
       telemetry.log('player_panel', { open: !$('playerPanel').classList.contains('hidden') });
     });
+    if (!this.audioAllowed) $('btnInfoMode').classList.add('hidden');
     $('btnInfoMode').addEventListener('click', e => {
       audio.click();
       this.infoMode = this.infoMode === 'audio' ? 'read' : 'audio';
diff --git a/App/teacher.html b/App/teacher.html
index 6c589cd..feacacd 100644
--- a/App/teacher.html
+++ b/App/teacher.html
@@ -2311,6 +2311,11 @@ async function loadModuleMatrix() {
     if (!coming) {
       s += '<button class="mc-btn primary" onclick="cycleClassMode(\''+m.id+'\',\''+m.classMode+'\')" title="Modus wechseln">🚀 Klassen-Mode</button>';
     }
+    // Vorlese-Modus (Audio-Info) pro Klasse erlauben/sperren — Sims mit Sprachausgabe
+    if (!coming && AUDIO_INFO_MODULES[m.id]) {
+      var aOn = m.audioInfo !== false;
+      s += '<button class="mc-btn" onclick="toggleAudioInfo(\''+m.id+'\','+(aOn?'true':'false')+')" title="Vorlese-Modus (gesprochene Meldungen) für die Klasse '+(aOn?'sperren':'erlauben')+'">'+(aOn?'🔊 Vorlesen an':'🔇 Vorlesen aus')+'</button>';
+    }
     s += '<a href="modul-'+m.id+'" class="mc-btn" target="_blank" rel="noopener" title="Detail-Seite">📖 Infos</a>';
     s += '<a href="glossar?module='+m.id+'" class="mc-btn" target="_blank" rel="noopener" title="Glossar gefiltert">📚 Glossar</a>';
     s += '<a href="lehrplan?module='+m.id+'" class="mc-btn" target="_blank" rel="noopener" title="Lehrplan-Bezug">📋 Lehrplan</a>';
@@ -2386,6 +2391,13 @@ async function toggleAssignmentPause(moduleId, paused) {
   loadModuleMatrix();
 }
 
+// Sims mit Vorlese-Modus (gesprochene Info-Meldungen) — Lehrer-Schalter pro Klasse
+var AUDIO_INFO_MODULES = { tourismustal: true };
+async function toggleAudioInfo(moduleId, current) {
+  await api('modules', {action:'set_audio_info', classId:currentClassId, moduleId:moduleId, enabled: !current});
+  loadModuleMatrix();
+}
+
 // Klick auf Modul-Spalte in Matrix: toggelt alle Schueler dieser Klasse fuer
 // das Modul. Setzt Klassen-Default auf locked oder free und loescht alle
 // individuellen Overrides — Schueler erben den Default.