diff --git a/library/src/calculate_price.cpp b/library/src/calculate_price.cpp
index 10ff1f5..b389175 100644
--- a/library/src/calculate_price.cpp
+++ b/library/src/calculate_price.cpp
@@ -315,10 +315,20 @@ int CALCULATE_LIBRARY_API get_maximal_parkingprice(Configuration *cfg,
         break;
     case PERMIT_TYPE::DAY_TICKET_PKW:
         break;
-    case PERMIT_TYPE::SHORT_TERM_PARKING_BUS:
-        break;
-    case PERMIT_TYPE::SHORT_TERM_PARKING_PKW:
-        break;
+    case PERMIT_TYPE::SHORT_TERM_PARKING_BUS: {
+        std::optional<ATBPaymentOption> po = cfg->getPaymentOptionForKey(permitType);
+        if (po.has_value()) {
+            ATBPaymentOption option = po.value();
+            return option.pop_max_price;
+        }
+    } break;
+    case PERMIT_TYPE::SHORT_TERM_PARKING_PKW: {
+        std::optional<ATBPaymentOption> po = cfg->getPaymentOptionForKey(permitType);
+        if (po.has_value()) {
+            ATBPaymentOption option = po.value();
+            return option.pop_max_price;
+        }
+    } break;
     case PERMIT_TYPE::SHORT_TERM_PARKING_CAMPER:
         break;
     default: ;