diff --git a/src/Service/BookingPriceCalculatorService.php b/src/Service/BookingPriceCalculatorService.php
index f6c1f6f..2345f8c 100644
--- a/src/Service/BookingPriceCalculatorService.php
+++ b/src/Service/BookingPriceCalculatorService.php
@@ -346,25 +346,26 @@ class BookingPriceCalculatorService
      * Aggregates all transportation-related services and pricing into separate line items.
      *
      * Creates separate entries for:
-     * - Zustieg: Sum of all pickup prices and base transportation costs (positive and negative)
+     * - Beförderung: Sum of all positive pickup prices and base transportation costs
+     * - Beförderung - Rabatt: Sum of all negative transportation prices (discounts)
      * - Parkplatz: Sum of all parking service prices
      *
      * Only includes transportation costs from eligible participants.
      *
-     * Note: Transportation discounts will be handled generically by groupServicesBySubtype as "Beförderung - Rabatt"
-     *
      * @param BookingDto $bookingDto The booking data containing participants
      *
-     * @return array Array of transportation line items (Zustieg, Parkplatz)
+     * @return array Array of transportation line items (Beförderung, Rabatt, Parkplatz)
      */
     private function aggregateTransportationServices(BookingDto $bookingDto): array
     {
         $participants = $bookingDto->getParticipants();
 
-        $pickupTotal = 0.0;     // All pickup prices and base transportation costs
-        $parkingTotal = 0.0;    // Parking service costs
+        $transportationPositiveTotal = 0.0;     // Positive transportation/pickup costs
+        $transportationDiscountTotal = 0.0;     // Negative transportation prices (discounts)
+        $parkingTotal = 0.0;                    // Parking service costs
 
-        $pickupParticipants = 0;
+        $transportationParticipants = 0;
+        $discountParticipants = 0;
         $parkingParticipants = 0;
 
         foreach ($participants as $participantIndex => $participant) {
@@ -373,22 +374,35 @@ class BookingPriceCalculatorService
                 continue;
             }
 
-            $participantPickupCost = 0.0;
+            $participantTransportationPositiveCost = 0.0;
+            $participantTransportationDiscountCost = 0.0;
             $participantParkingCost = 0.0;
 
             // Transportation service pricing (outbound)
             if (null !== $participant->transportationOutbound && null !== $participant->transportationOutbound->price) {
-                $participantPickupCost += $participant->transportationOutbound->price;
+                if ($participant->transportationOutbound->price < 0) {
+                    $participantTransportationDiscountCost += $participant->transportationOutbound->price;
+                } else {
+                    $participantTransportationPositiveCost += $participant->transportationOutbound->price;
+                }
             }
 
             // Transportation service pricing (inbound)
             if (null !== $participant->transportationInbound && null !== $participant->transportationInbound->price) {
-                $participantPickupCost += $participant->transportationInbound->price;
+                if ($participant->transportationInbound->price < 0) {
+                    $participantTransportationDiscountCost += $participant->transportationInbound->price;
+                } else {
+                    $participantTransportationPositiveCost += $participant->transportationInbound->price;
+                }
             }
 
             // Pickup pricing (unified for both directions)
             if (null !== $participant->pickup && null !== $participant->pickup->price) {
-                $participantPickupCost += $participant->pickup->price;
+                if ($participant->pickup->price < 0) {
+                    $participantTransportationDiscountCost += $participant->pickup->price;
+                } else {
+                    $participantTransportationPositiveCost += $participant->pickup->price;
+                }
             }
 
             // Parking service pricing
@@ -396,10 +410,14 @@ class BookingPriceCalculatorService
                 $participantParkingCost += $participant->parkingService->price;
             }
 
-            // Aggregate participant totals (count participants who have any transportation costs)
-            if (0.0 !== $participantPickupCost) {
-                $pickupTotal += $participantPickupCost;
-                ++$pickupParticipants;
+            // Aggregate participant totals
+            if ($participantTransportationPositiveCost > 0) {
+                $transportationPositiveTotal += $participantTransportationPositiveCost;
+                ++$transportationParticipants;
+            }
+            if ($participantTransportationDiscountCost < 0) {
+                $transportationDiscountTotal += $participantTransportationDiscountCost;
+                ++$discountParticipants;
             }
             if ($participantParkingCost > 0) {
                 $parkingTotal += $participantParkingCost;
@@ -409,18 +427,30 @@ class BookingPriceCalculatorService
 
         $transportationItems = [];
 
-        // Add pickup entry (if any transportation/pickup costs exist)
-        if (0.0 !== $pickupTotal) {
-            $transportationItems['transportation_pickup'] = [
-                'serviceId' => 'transportation_pickup',
-                'label' => 'Zustieg',
+        // Add transportation entry (only positive costs)
+        if ($transportationPositiveTotal > 0) {
+            $transportationItems['transportation_positive'] = [
+                'serviceId' => 'transportation_positive',
+                'label' => 'Beförderung',
                 'unitPrice' => null,
-                'participantCount' => $pickupParticipants,
-                'totalPrice' => $pickupTotal,
+                'participantCount' => $transportationParticipants,
+                'totalPrice' => $transportationPositiveTotal,
                 'subType' => Constants::GROUP_TRANSPORTATION,
             ];
         }
 
+        // Add discount entry (only negative costs)
+        if ($transportationDiscountTotal < 0) {
+            $transportationItems['transportation_discount'] = [
+                'serviceId' => 'transportation_discount',
+                'label' => 'Beförderung - Rabatt',
+                'unitPrice' => null,
+                'participantCount' => $discountParticipants,
+                'totalPrice' => $transportationDiscountTotal,
+                'subType' => Constants::GROUP_TRANSPORTATION.'_discount',
+            ];
+        }
+
         // Add parking entry (only if positive costs)
         if ($parkingTotal > 0) {
             $transportationItems['transportation_parking'] = [