Index: src/lang/english.txt
===================================================================
--- src/lang/english.txt	(revision 16057)
+++ src/lang/english.txt	(working copy)
@@ -2682,6 +2682,7 @@
 STR_ORDER_CONDITIONAL_AGE                                       :Vehicle age (years)
 STR_ORDER_CONDITIONAL_REQUIRES_SERVICE                          :Requires service
 STR_ORDER_CONDITIONAL_UNCONDITIONALLY                           :Always
+STR_ORDER_CONDITIONAL_PERCENT                                   :Percent chance
 STR_ORDER_CONDITIONAL_COMPARATOR_EQUALS                         :is equal to
 STR_ORDER_CONDITIONAL_COMPARATOR_NOT_EQUALS                     :is not equal to
 STR_ORDER_CONDITIONAL_COMPARATOR_LESS_THAN                      :is less than
@@ -2694,6 +2695,7 @@
 STR_CONDITIONAL_UNCONDITIONAL                                   :Jump to order {COMMA}
 STR_CONDITIONAL_NUM                                             :Jump to order {COMMA} when {STRING} {STRING} {COMMA}
 STR_CONDITIONAL_TRUE_FALSE                                      :Jump to order {COMMA} when {STRING} {STRING}
+STR_CONDITIONAL_PERCENT                                         :Jump to order {COMMA} with {COMMA} percent probability
 
 STR_TIMETABLE_NO_TRAVEL                                         :{SETX 30}No travel
 STR_TIMETABLE_TRAVEL_NOT_TIMETABLED                             :{SETX 30}Travel (not timetabled)
Index: src/order_type.h
===================================================================
--- src/order_type.h	(revision 16057)
+++ src/order_type.h	(working copy)
@@ -109,6 +109,7 @@
 	OCV_AGE,              ///< Skip based on the age
 	OCV_REQUIRES_SERVICE, ///< Skip when the vehicle requires service
 	OCV_UNCONDITIONALLY,  ///< Always skip
+	OCV_PERCENT,          ///< Skip with xx percent probability
 	OCV_END
 };
 
Index: src/order_cmd.cpp
===================================================================
--- src/order_cmd.cpp	(revision 16057)
+++ src/order_cmd.cpp	(working copy)
@@ -548,6 +548,9 @@
 					if (new_order.GetConditionValue() != 0) return CMD_ERROR;
 					break;
 
+				case OCV_PERCENT:
+					if (occ != OCC_EQUALS) return CMD_ERROR;
+					/* FALL THROUGH */
 				case OCV_LOAD_PERCENTAGE:
 				case OCV_RELIABILITY:
 					if (new_order.GetConditionValue() > 100) return CMD_ERROR;
@@ -920,7 +923,9 @@
 		case MOF_COND_COMPARATOR:
 			if (data >= OCC_END) return CMD_ERROR;
 			switch (order->GetConditionVariable()) {
-				case OCV_UNCONDITIONALLY: return CMD_ERROR;
+				case OCV_UNCONDITIONALLY:
+				case OCV_PERCENT:
+					return CMD_ERROR;
 
 				case OCV_REQUIRES_SERVICE:
 					if (data != OCC_IS_TRUE && data != OCC_IS_FALSE) return CMD_ERROR;
@@ -938,6 +943,7 @@
 
 				case OCV_LOAD_PERCENTAGE:
 				case OCV_RELIABILITY:
+				case OCV_PERCENT:
 					if (data > 100) return CMD_ERROR;
 					break;
 
@@ -1013,6 +1019,9 @@
 						if (occ != OCC_IS_TRUE && occ != OCC_IS_FALSE) order->SetConditionComparator(OCC_IS_TRUE);
 						break;
 
+					case OCV_PERCENT:
+						order->SetConditionComparator(OCC_EQUALS);
+						/* FALL THROUGH */
 					case OCV_LOAD_PERCENTAGE:
 					case OCV_RELIABILITY:
 						if (order->GetConditionValue() > 100) order->SetConditionValue(100);
@@ -1615,6 +1624,7 @@
 		case OCV_MAX_SPEED:        skip_order = OrderConditionCompare(occ, v->GetDisplayMaxSpeed() * 10 / 16, value); break;
 		case OCV_AGE:              skip_order = OrderConditionCompare(occ, v->age / DAYS_IN_LEAP_YEAR,        value); break;
 		case OCV_REQUIRES_SERVICE: skip_order = OrderConditionCompare(occ, v->NeedsServicing(),               value); break;
+		case OCV_PERCENT:          skip_order = Chance16(value, 100); break;
 		case OCV_UNCONDITIONALLY:  skip_order = true; break;
 		default: NOT_REACHED();
 	}
@@ -1822,3 +1832,4 @@
 
 	_backup_orders_tile = 0;
 }
+
Index: src/order_gui.cpp
===================================================================
--- src/order_gui.cpp	(revision 16057)
+++ src/order_gui.cpp	(working copy)
@@ -138,6 +138,7 @@
 	STR_ORDER_CONDITIONAL_AGE,
 	STR_ORDER_CONDITIONAL_REQUIRES_SERVICE,
 	STR_ORDER_CONDITIONAL_UNCONDITIONALLY,
+	STR_ORDER_CONDITIONAL_PERCENT,
 	INVALID_STRING_ID,
 };
 
@@ -256,10 +257,15 @@
 			SetDParam(2, order->GetDestination());
 			break;
 
-		case OT_CONDITIONAL:
+		case OT_CONDITIONAL: {
 			SetDParam(2, order->GetConditionSkipToOrder() + 1);
-			if (order->GetConditionVariable() == OCV_UNCONDITIONALLY) {
+			const OrderConditionVariable ocv = order->GetConditionVariable();
+			/* handle some non-ordinary cases seperately */
+			if (ocv == OCV_UNCONDITIONALLY) {
 				SetDParam(1, STR_CONDITIONAL_UNCONDITIONAL);
+			} else if (ocv == OCV_PERCENT) {
+				SetDParam(1, STR_CONDITIONAL_PERCENT);
+				SetDParam(3, order->GetConditionValue()); 
 			} else {
 				OrderConditionComparator occ = order->GetConditionComparator();
 				SetDParam(1, (occ == OCC_IS_TRUE || occ == OCC_IS_FALSE) ? STR_CONDITIONAL_TRUE_FALSE : STR_CONDITIONAL_NUM);
@@ -277,7 +283,7 @@
 			} else {
 				SetDParam(6, STR_EMPTY);
 			}
-			break;
+		} break;
 
 		default: NOT_REACHED();
 	}
@@ -798,7 +804,7 @@
 					this->ShowWidget(ORDER_WIDGET_COND_VALUE);
 
 					OrderConditionVariable ocv = order->GetConditionVariable();
-					this->SetWidgetDisabledState(ORDER_WIDGET_COND_COMPARATOR, ocv == OCV_UNCONDITIONALLY);
+					this->SetWidgetDisabledState(ORDER_WIDGET_COND_COMPARATOR, ocv == OCV_UNCONDITIONALLY || ocv == OCV_PERCENT);
 					this->SetWidgetDisabledState(ORDER_WIDGET_COND_VALUE, ocv == OCV_REQUIRES_SERVICE || ocv == OCV_UNCONDITIONALLY);
 
 					uint value = order->GetConditionValue();
@@ -985,6 +991,7 @@
 					value = ConvertDisplaySpeedToSpeed(value);
 					break;
 
+				case OCV_PERCENT:
 				case OCV_RELIABILITY:
 				case OCV_LOAD_PERCENTAGE:
 					value = Clamp(value, 0, 100);
Index: src/saveload/saveload.cpp
===================================================================
--- src/saveload/saveload.cpp	(revision 16057)
+++ src/saveload/saveload.cpp	(working copy)
@@ -40,7 +40,7 @@
 
 #include "saveload_internal.h"
 
-extern const uint16 SAVEGAME_VERSION = 117;
+extern const uint16 SAVEGAME_VERSION = 118;
 
 SavegameType _savegame_type; ///< type of savegame we are loading