diff --git a/FS25_ADSmartPickup/gui/SmartPickupFrame.lua b/FS25_ADSmartPickup/gui/SmartPickupFrame.lua
index 6131b8e..30a0af5 100644
--- a/FS25_ADSmartPickup/gui/SmartPickupFrame.lua
+++ b/FS25_ADSmartPickup/gui/SmartPickupFrame.lua
@@ -15,6 +15,8 @@ SmartPickupFrame.TAB_NAMES = {"spu_tab_overview", "spu_tab_supply", "spu_tab_out
 -- Hver fane viser kun runs af sin egen slags; Oversigt og Lagre opretter forsynings-runs.
 SmartPickupFrame.TAB_KIND = {"supply", "supply", "outbound", "supply"}
 SmartPickupFrame.POLICIES = {"off", "store", "sell", "sellElseStore"}
+-- Afvisningsgrunde der handler om VOGNEN (ikke run'ets opsætning): traktoren kan ikke vælges.
+SmartPickupFrame.VEHICLE_BLOCKING_REASONS = {noTrailer = true, cannotCarry = true, needsAutoload = true}
 
 function SmartPickupFrame.new(i18n, getAdEnv)
     local self = SmartPickupFrame:superClass().new(nil, SmartPickupFrame._mt)
@@ -457,6 +459,12 @@ function SmartPickupFrame:fillVehicleRows(adEnv, run)
             title:setText(string.format("%s — %s", ADRunsController.getVehicleLabel(adEnv, vehicle), string.format(self.i18n:getText("spu_inRun"), tostring(otherRun.name))))
         else
             title:setText(self:describeVehicle(adEnv, run, vehicle, inRun[id]))
+            -- Vogn der ikke kan bære run'ets varer (ingen vogn / forkert vogn / paller uden UAL) kan ikke
+            -- vælges; er den allerede i run'et, kan den stadig fravælges.
+            if not inRun[id] and SmartPickupFrame.VEHICLE_BLOCKING_REASONS[ADRunsController.validateVehicle(adEnv, run, vehicle).reason] then
+                option:setDisabled(true)
+                self.rowData[option].locked = true
+            end
         end
     end
 end
diff --git a/FS25_ADSmartPickup/modDesc.xml b/FS25_ADSmartPickup/modDesc.xml
index 253f835..2c354e8 100644
--- a/FS25_ADSmartPickup/modDesc.xml
+++ b/FS25_ADSmartPickup/modDesc.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8" standalone="no"?>
 <modDesc descVersion="107">
     <author>masterdraco</author>
-    <version>1.12.3.0</version>
+    <version>1.12.4.0</version>
     <title>
         <en>AD Smart Pickup</en>
     </title>