diff --git a/src/lang/english.txt b/src/lang/english.txt
index 65f080fbb2..d605b32ce7 100644
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -4567,6 +4567,9 @@ STR_GAME_SAVELOAD_ERROR_DATA_INTEGRITY_CHECK_FAILED             :Data integrity
 STR_GAME_SAVELOAD_NOT_AVAILABLE                                 :<not available>
 STR_WARNING_LOADGAME_REMOVED_TRAMS                              :{WHITE}Game was saved in version without tram support. All trams have been removed
 
+STR_GAME_SAVELOAD_ERROR_HUGE_AIRPORTS_PRESENT                   :Savegame uses huge airports
+STR_GAME_SAVELOAD_ERROR_HELI_OILRIG_BUG                         :Savegame has a helicopter on approach to a buggy oil rig
+
 # Map generation messages
 STR_ERROR_COULD_NOT_CREATE_TOWN                                 :{WHITE}Map generation aborted...{}... no suitable town locations
 STR_ERROR_NO_TOWN_IN_SCENARIO                                   :{WHITE}... there is no town in this scenario
diff --git a/src/saveload/afterload.cpp b/src/saveload/afterload.cpp
index a0f27100f5..99ba5694a2 100644
--- a/src/saveload/afterload.cpp
+++ b/src/saveload/afterload.cpp
@@ -56,6 +56,7 @@
 #include "../order_backup.h"
 #include "../error.h"
 #include "../disaster_vehicle.h"
+#include "../tracerestrict.h"
 
 
 #include "saveload_internal.h"
@@ -584,7 +585,7 @@ bool AfterLoadGame()
 		}
 	}
 
-	if (IsSavegameVersionBefore(194)) {
+	if (IsSavegameVersionBefore(194) && SlXvIsFeatureMissing(XSLFI_HEIGHT_8_BIT)) {
 		_settings_game.construction.max_heightlevel = 15;
 
 		/* In old savegame versions, the heightlevel was coded in bits 0..3 of the type field */
@@ -599,6 +600,17 @@ bool AfterLoadGame()
 				SB(_m[t].type, 2, 2, 0);
 			}
 		}
+	} else if (SlXvIsFeaturePresent(XSLFI_HEIGHT_8_BIT)) {
+		for (TileIndex t = 0; t < map_size; t++) {
+			SB(_m[t].type, 0, 2, GB(_me[t].m6, 0, 2));
+			SB(_me[t].m6, 0, 2, 0);
+			if (MayHaveBridgeAbove(t)) {
+				SB(_m[t].type, 2, 2, GB(_me[t].m6, 6, 2));
+				SB(_me[t].m6, 6, 2, 0);
+			} else {
+				SB(_m[t].type, 2, 2, 0);
+			}
+		}
 	}
 
 	/* in version 2.1 of the savegame, town owner was unified. */
@@ -2943,6 +2955,15 @@ bool AfterLoadGame()
 		}
 	}
 
+	if (SlXvIsFeaturePresent(XSLFI_SPRINGPP)) {
+		// re-arrange vehicle_flags
+		Vehicle *v;
+		FOR_ALL_VEHICLES(v) {
+			SB(v->vehicle_flags, VF_AUTOMATE_TIMETABLE, 1, GB(v->vehicle_flags, 6, 1));
+			SB(v->vehicle_flags, VF_STOP_LOADING, 4, GB(v->vehicle_flags, 7, 4));
+		}
+	}
+
 	if (IsSavegameVersionBefore(188)) {
 		/* Fix articulated road vehicles.
 		 * Some curves were shorter than other curves.
@@ -3037,6 +3058,110 @@ bool AfterLoadGame()
 		}
 	}
 
+	if (SlXvIsFeaturePresent(XSLFI_SPRINGPP, 1, 1)) {
+		/*
+		 * Cost scaling changes:
+		 * SpringPP v2.0.102 divides all prices by the difficulty factor, effectively making things about 8 times cheaper.
+		 * Adjust the inflation factor to compensate for this, as otherwise the game is unplayable on load if inflation has been running for a while.
+		 * To avoid making things too cheap, clamp the price inflation factor to no lower than the payment inflation factor.
+		 */
+
+		DEBUG(sl, 3, "Inflation prices: %f", _economy.inflation_prices / 65536.0);
+		DEBUG(sl, 3, "Inflation payments: %f", _economy.inflation_payment / 65536.0);
+
+		_economy.inflation_prices >>= 3;
+		if (_economy.inflation_prices < _economy.inflation_payment) {
+			_economy.inflation_prices = _economy.inflation_payment;
+		}
+
+		DEBUG(sl, 3, "New inflation prices: %f", _economy.inflation_prices / 65536.0);
+	}
+
+	if (SlXvIsFeaturePresent(XSLFI_SPRINGPP)) {
+		/*
+		 * Reject huge airports
+		 * Annoyingly SpringPP v2.0.102 has a bug where it uses the same ID for AT_INTERCONTINENTAL2 and AT_OILRIG,
+		 */
+		Station *st;
+		FOR_ALL_STATIONS(st) {
+			if (st->airport.tile == INVALID_TILE) continue;
+			StringID err = INVALID_STRING_ID;
+			if (st->airport.type == 9) {
+				if (st->dock_tile != INVALID_TILE && IsOilRig(st->dock_tile)) {
+					/* this airport is probably an oil rig, not a huge airport */
+				} else {
+					err = STR_GAME_SAVELOAD_ERROR_HUGE_AIRPORTS_PRESENT;
+				}
+				st->airport.type = AT_OILRIG;
+			} else if (st->airport.type == 10) {
+				err = STR_GAME_SAVELOAD_ERROR_HUGE_AIRPORTS_PRESENT;
+			}
+			if (err != INVALID_STRING_ID) {
+				SetSaveLoadError(err);
+				/* Restore the signals */
+				ResetSignalHandlers();
+				return false;
+			}
+		}
+	}
+	if (SlXvIsFeaturePresent(XSLFI_SPRINGPP, 1, 1)) {
+		/*
+		 * Reject helicopters aproaching oil rigs using the wrong aircraft movement data
+		 * Annoyingly SpringPP v2.0.102 has a bug where it uses the same ID for AT_INTERCONTINENTAL2 and AT_OILRIG
+		 */
+		Aircraft *v;
+		FOR_ALL_AIRCRAFT(v) {
+			Station *st = GetTargetAirportIfValid(v);
+			if (st != NULL && st->dock_tile != INVALID_TILE && IsOilRig(st->dock_tile)) {
+				/* aircraft is on approach to an oil rig, bail out now */
+				SetSaveLoadError(STR_GAME_SAVELOAD_ERROR_HELI_OILRIG_BUG);
+				/* Restore the signals */
+				ResetSignalHandlers();
+				return false;
+			}
+		}
+	}
+
+	if (SlXvIsFeaturePresent(XSLFI_MIGHT_USE_PAX_SIGNALS) || SlXvIsFeatureMissing(XSLFI_TRACE_RESTRICT)) {
+		for (TileIndex t = 0; t < map_size; t++) {
+			if (HasStationTileRail(t)) {
+				/* clear station PAX bit */
+				ClrBit(_me[t].m6, 6);
+			}
+			if (IsTileType(t, MP_RAILWAY) && HasSignals(t)) {
+				/*
+				 * tracerestrict uses same bit as 1st PAX signals bit
+				 * only conditionally clear the bit, don't bother checking for whether to set it
+				 */
+				if (IsRestrictedSignal(t)) {
+					TraceRestrictSetIsSignalRestrictedBit(t);
+				}
+
+				/* clear 2nd signal PAX bit */
+				ClrBit(_m[t].m2, 13);
+			}
+		}
+	}
+
+	if (SlXvIsFeaturePresent(XSLFI_TRAFFIC_LIGHTS)) {
+		/* remove traffic lights */
+		for (TileIndex t = 0; t < map_size; t++) {
+			if (IsTileType(t, MP_ROAD) && (GetRoadTileType(t) == ROAD_TILE_NORMAL)) {
+				DeleteAnimatedTile(t);
+				ClrBit(_me[t].m7, 4);
+			}
+		}
+	}
+
+	if (SlXvIsFeaturePresent(XSLFI_RAIL_AGEING)) {
+		/* remove rail aging data */
+		for (TileIndex t = 0; t < map_size; t++) {
+			if (IsPlainRailTile(t)) {
+				SB(_me[t].m7, 0, 8, 0);
+			}
+		}
+	}
+
 	/* Station acceptance is some kind of cache */
 	if (IsSavegameVersionBefore(127)) {
 		Station *st;
diff --git a/src/saveload/extended_ver_sl.cpp b/src/saveload/extended_ver_sl.cpp
index 73265c7050..cc81735f57 100644
--- a/src/saveload/extended_ver_sl.cpp
+++ b/src/saveload/extended_ver_sl.cpp
@@ -140,6 +140,40 @@ void SlXvCheckSpecialSavegameVersions()
 		_sl_is_faked_ext = true;
 		_sl_xv_feature_versions[XSLFI_TRACE_RESTRICT] = 1;
 	}
+
+	if (_sl_version == 220) { /* SL_SPRING_2013_v2_0_102 */
+		DEBUG(sl, 1, "Loading a SpringPP 2013 v2.0.102 savegame version %d as version 187", _sl_version);
+
+		_sl_version = 187;
+		_sl_xv_feature_versions[XSLFI_SPRINGPP] = 1;
+	} else if (_sl_version == 221) { /* SL_SPRING_2013_v2_1_108 */
+		DEBUG(sl, 1, "Loading a SpringPP 2013 v2.1.108 savegame version %d as version 188", _sl_version);
+
+		_sl_version = 188;
+		_sl_xv_feature_versions[XSLFI_SPRINGPP] = 2;
+	} else if (_sl_version == 222) { /* SL_SPRING_2013_v2_1_147 */
+		DEBUG(sl, 1, "Loading a SpringPP 2013 v2.1.147 savegame version %d as version 194", _sl_version);
+
+		_sl_version = 194;
+		_sl_xv_feature_versions[XSLFI_SPRINGPP] = 3;
+	}
+
+	if (_sl_xv_feature_versions[XSLFI_SPRINGPP]) {
+		_sl_xv_feature_versions[XSLFI_RIFF_HEADER_60_BIT] = 1;
+		_sl_xv_feature_versions[XSLFI_HEIGHT_8_BIT] = 1;
+		_sl_xv_feature_versions[XSLFI_MIGHT_USE_PAX_SIGNALS] = 1;
+		_sl_xv_feature_versions[XSLFI_TRAFFIC_LIGHTS] = 1;
+		_sl_xv_feature_versions[XSLFI_RAIL_AGEING] = 1;
+
+		_sl_xv_feature_versions[XSLFI_TIMETABLES_START_TICKS] = 1;
+		_sl_xv_feature_versions[XSLFI_VEHICLE_REPAIR_COST] = 1;
+		_sl_xv_feature_versions[XSLFI_IMPROVED_BREAKDOWNS] = 1;
+		_sl_xv_feature_versions[XSLFI_INFRA_SHARING] = 1;
+		_sl_xv_feature_versions[XSLFI_AUTO_TIMETABLE] = 1;
+		_sl_xv_feature_versions[XSLFI_MORE_COND_ORDERS] = 1;
+
+		_sl_xv_discardable_chunk_ids.push_back('SNOW');
+	}
 }
 
 /**
diff --git a/src/saveload/extended_ver_sl.h b/src/saveload/extended_ver_sl.h
index 51349bc7dc..7f010b59ec 100644
--- a/src/saveload/extended_ver_sl.h
+++ b/src/saveload/extended_ver_sl.h
@@ -38,6 +38,13 @@ enum SlXvFeatureIndex {
 	XSLFI_ORDER_OCCUPANCY,                        ///< Running average of order occupancy
 	XSLFI_MORE_COND_ORDERS,                       ///< More conditional orders patch
 
+	XSLFI_RIFF_HEADER_60_BIT,                     ///< Size field in RIFF chunk header is 60 bit
+	XSLFI_HEIGHT_8_BIT,                           ///< Map tile height is 8 bit instead of 4 bit, but savegame version may be before this became true in trunk
+	XSLFI_MIGHT_USE_PAX_SIGNALS,                  ///< This save game might use the pax-signals feature
+	XSLFI_TRAFFIC_LIGHTS,                         ///< This save game uses road traffic lights
+	XSLFI_RAIL_AGEING,                            ///< This save game uses the rail aging patch
+	XSLFI_SPRINGPP,                               ///< This is a SpringPP game, use this for loading some settings
+
 	XSLFI_SIZE,                                   ///< Total count of features, including null feature
 };
 
diff --git a/src/saveload/order_sl.cpp b/src/saveload/order_sl.cpp
index 3b5fd56c6c..f45346b183 100644
--- a/src/saveload/order_sl.cpp
+++ b/src/saveload/order_sl.cpp
@@ -106,6 +106,7 @@ const SaveLoad *GetOrderDescription()
 	static const SaveLoad _order_desc[] = {
 		     SLE_VAR(Order, type,           SLE_UINT8),
 		     SLE_VAR(Order, flags,          SLE_UINT8),
+		SLE_CONDNULL_X(1, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
 		     SLE_VAR(Order, dest,           SLE_UINT16),
 		     SLE_REF(Order, next,           REF_ORDER),
 		 SLE_CONDVAR(Order, refit_cargo,    SLE_UINT8,   36, SL_MAX_VERSION),
diff --git a/src/saveload/saveload.cpp b/src/saveload/saveload.cpp
index 3cc555a350..9df256bb2c 100644
--- a/src/saveload/saveload.cpp
+++ b/src/saveload/saveload.cpp
@@ -1695,6 +1695,12 @@ static void SlLoadChunk(const ChunkHandler *ch)
 				/* Read length */
 				len = (SlReadByte() << 16) | ((m >> 4) << 24);
 				len += SlReadUint16();
+				if (SlXvIsFeaturePresent(XSLFI_RIFF_HEADER_60_BIT)) {
+					if (len != 0) {
+						SlErrorCorrupt("RIFF chunk too large");
+					}
+					len = SlReadUint32();
+				}
 				_sl.obj_len = len;
 				endoffs = _sl.reader->GetSize() + len;
 				ch->load_proc();
@@ -1741,6 +1747,12 @@ static void SlLoadCheckChunk(const ChunkHandler *ch)
 				/* Read length */
 				len = (SlReadByte() << 16) | ((m >> 4) << 24);
 				len += SlReadUint16();
+				if (SlXvIsFeaturePresent(XSLFI_RIFF_HEADER_60_BIT)) {
+					if (len != 0) {
+						SlErrorCorrupt("RIFF chunk too large");
+					}
+					len = SlReadUint32();
+				}
 				_sl.obj_len = len;
 				endoffs = _sl.reader->GetSize() + len;
 				if (ch && ch->load_check_proc) {
diff --git a/src/saveload/station_sl.cpp b/src/saveload/station_sl.cpp
index 3db5e1f5f8..15ad396dac 100644
--- a/src/saveload/station_sl.cpp
+++ b/src/saveload/station_sl.cpp
@@ -190,7 +190,8 @@ static const SaveLoad _old_station_desc[] = {
 
 	    SLE_VAR(Station, time_since_load,            SLE_UINT8),
 	    SLE_VAR(Station, time_since_unload,          SLE_UINT8),
-	    SLE_VAR(Station, delete_ctr,                 SLE_UINT8),
+	SLE_CONDVAR_X(Station, delete_ctr,               SLE_UINT8,                   0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 0, 2)),
+	SLE_CONDVAR_X(Station, delete_ctr,               SLE_FILE_U16  | SLE_VAR_U8,  0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 3)),
 	    SLE_VAR(Station, owner,                      SLE_UINT8),
 	    SLE_VAR(Station, facilities,                 SLE_UINT8),
 	    SLE_VAR(Station, airport.type,               SLE_UINT8),
@@ -270,6 +271,7 @@ const SaveLoad *GetGoodsDesc()
 		 SLE_CONDVAR(GoodsEntry, status,               SLE_UINT8,                  68, SL_MAX_VERSION),
 		SLE_CONDNULL(2,                                                            51, 67),
 		     SLE_VAR(GoodsEntry, time_since_pickup,    SLE_UINT8),
+		 SLE_CONDNULL_X(6,                                                          0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 3)),
 		     SLE_VAR(GoodsEntry, rating,               SLE_UINT8),
 		SLEG_CONDVAR(            _cargo_source,        SLE_FILE_U8 | SLE_VAR_U16,   0, 6),
 		SLEG_CONDVAR(            _cargo_source,        SLE_UINT16,                  7, 67),
@@ -393,7 +395,8 @@ static const SaveLoad _base_station_desc[] = {
 	      SLE_REF(BaseStation, town,                   REF_TOWN),
 	      SLE_VAR(BaseStation, string_id,              SLE_STRINGID),
 	      SLE_STR(BaseStation, name,                   SLE_STR | SLF_ALLOW_CONTROL, 0),
-	      SLE_VAR(BaseStation, delete_ctr,             SLE_UINT8),
+	SLE_CONDVAR_X(Station,     delete_ctr,             SLE_UINT8,                   0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 0, 2)),
+	SLE_CONDVAR_X(Station,     delete_ctr,             SLE_FILE_U16  | SLE_VAR_U8,  0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 3)),
 	      SLE_VAR(BaseStation, owner,                  SLE_UINT8),
 	      SLE_VAR(BaseStation, facilities,             SLE_UINT8),
 	      SLE_VAR(BaseStation, build_date,             SLE_INT32),
@@ -424,7 +427,9 @@ static const SaveLoad _station_desc[] = {
 	  SLE_CONDVAR(Station, airport.h,                  SLE_FILE_U8 | SLE_VAR_U16, 140, SL_MAX_VERSION),
 	      SLE_VAR(Station, airport.type,               SLE_UINT8),
 	  SLE_CONDVAR(Station, airport.layout,             SLE_UINT8,                 145, SL_MAX_VERSION),
+	SLE_CONDNULL_X(1, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
 	      SLE_VAR(Station, airport.flags,              SLE_UINT64),
+	SLE_CONDNULL_X(8, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
 	  SLE_CONDVAR(Station, airport.rotation,           SLE_UINT8,                 145, SL_MAX_VERSION),
 	 SLEG_CONDARR(_old_st_persistent_storage.storage,  SLE_UINT32, 16,            145, 160),
 	  SLE_CONDREF(Station, airport.psa,                REF_STORAGE,               161, SL_MAX_VERSION),
diff --git a/src/saveload/town_sl.cpp b/src/saveload/town_sl.cpp
index 7db6a7aa6f..1ffca9f637 100644
--- a/src/saveload/town_sl.cpp
+++ b/src/saveload/town_sl.cpp
@@ -137,6 +137,7 @@ static const SaveLoad _town_desc[] = {
 	SLE_CONDVAR(Town, have_ratings,          SLE_UINT16,               104, SL_MAX_VERSION),
 	SLE_CONDARR(Town, ratings,               SLE_INT16, 8,               0, 103),
 	SLE_CONDARR(Town, ratings,               SLE_INT16, MAX_COMPANIES, 104, SL_MAX_VERSION),
+	SLE_CONDNULL_X(MAX_COMPANIES, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
 	/* failed bribe attempts are stored since savegame format 4 */
 	SLE_CONDARR(Town, unwanted,              SLE_INT8,  8,               4, 103),
 	SLE_CONDARR(Town, unwanted,              SLE_INT8,  MAX_COMPANIES, 104, SL_MAX_VERSION),
@@ -217,6 +218,15 @@ static const SaveLoad _town_received_desc[] = {
 	SLE_END()
 };
 
+static const SaveLoad _town_received_desc_spp[] = {
+	SLE_CONDVAR(TransportedCargoStat<uint16>, old_max, SLE_FILE_U32 | SLE_VAR_U16, 165, SL_MAX_VERSION),
+	SLE_CONDVAR(TransportedCargoStat<uint16>, new_max, SLE_FILE_U32 | SLE_VAR_U16, 165, SL_MAX_VERSION),
+	SLE_CONDVAR(TransportedCargoStat<uint16>, old_act, SLE_FILE_U32 | SLE_VAR_U16, 165, SL_MAX_VERSION),
+	SLE_CONDVAR(TransportedCargoStat<uint16>, new_act, SLE_FILE_U32 | SLE_VAR_U16, 165, SL_MAX_VERSION),
+
+	SLE_END()
+};
+
 static void Save_HIDS()
 {
 	Save_NewGRFMapping(_house_mngr);
@@ -247,8 +257,14 @@ static void RealSave_Town(Town *t)
 	for (CargoID i = 0; i < NUM_CARGO; i++) {
 		SlObject(&t->supplied[i], _town_supplied_desc);
 	}
-	for (int i = TE_BEGIN; i < NUM_TE; i++) {
-		SlObject(&t->received[i], _town_received_desc);
+	if (SlXvIsFeaturePresent(XSLFI_SPRINGPP)) {
+		for (int i = TE_BEGIN; i < NUM_TE; i++) {
+			SlObject(&t->received[i], _town_received_desc_spp);
+		}
+	} else {
+		for (int i = TE_BEGIN; i < NUM_TE; i++) {
+			SlObject(&t->received[i], _town_received_desc);
+		}
 	}
 
 	if (IsSavegameVersionBefore(166)) return;
@@ -281,8 +297,14 @@ static void Load_TOWN()
 		for (CargoID i = 0; i < NUM_CARGO; i++) {
 			SlObject(&t->supplied[i], _town_supplied_desc);
 		}
-		for (int i = TE_BEGIN; i < TE_END; i++) {
-			SlObject(&t->received[i], _town_received_desc);
+		if (SlXvIsFeaturePresent(XSLFI_SPRINGPP)) {
+			for (int i = TE_BEGIN; i < NUM_TE; i++) {
+				SlObject(&t->received[i], _town_received_desc_spp);
+			}
+		} else {
+			for (int i = TE_BEGIN; i < NUM_TE; i++) {
+				SlObject(&t->received[i], _town_received_desc);
+			}
 		}
 
 		if (t->townnamegrfid == 0 && !IsInsideMM(t->townnametype, SPECSTR_TOWNNAME_START, SPECSTR_TOWNNAME_LAST + 1) && GB(t->townnametype, 11, 5) != 15) {
diff --git a/src/saveload/vehicle_sl.cpp b/src/saveload/vehicle_sl.cpp
index 6488841fd4..7ca0ec76ad 100644
--- a/src/saveload/vehicle_sl.cpp
+++ b/src/saveload/vehicle_sl.cpp
@@ -645,7 +645,8 @@ const SaveLoad *GetVehicleDescription(VehicleType vt)
 
 		     SLE_VAR(Vehicle, day_counter,           SLE_UINT8),
 		     SLE_VAR(Vehicle, tick_counter,          SLE_UINT8),
-		 SLE_CONDVAR(Vehicle, running_ticks,         SLE_UINT8,                   88, SL_MAX_VERSION),
+		SLE_CONDVAR_X(Vehicle, running_ticks,        SLE_UINT8,                   88, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 0, 2)),
+		SLE_CONDVAR_X(Vehicle, running_ticks,        SLE_FILE_U16  | SLE_VAR_U8,  88, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 2)),
 
 		     SLE_VAR(Vehicle, cur_implicit_order_index,  SLE_UINT8),
 		 SLE_CONDVAR(Vehicle, cur_real_order_index,  SLE_UINT8,                  158, SL_MAX_VERSION),
@@ -726,10 +727,17 @@ const SaveLoad *GetVehicleDescription(VehicleType vt)
 
 		 SLE_CONDVAR(Vehicle, current_order_time,    SLE_UINT32,                  67, SL_MAX_VERSION),
 		SLE_CONDVAR_X(Vehicle, current_loading_time, SLE_UINT32,                   0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_AUTO_TIMETABLE)),
+		SLE_CONDNULL_X(4, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
 		 SLE_CONDVAR(Vehicle, lateness_counter,      SLE_INT32,                   67, SL_MAX_VERSION),
 
 		SLE_CONDNULL(10,                                                           2, 143), // old reserved space
 
+		SLE_CONDNULL_X((8 + 8 + 2 + 2 + 4 + 4 + 1 + 1) * 30, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
+		SLE_CONDNULL_X((8 + 8 + 2 + 2 + 4 + 4 + 1 + 1) * 70, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 3)),
+		SLE_CONDNULL_X(1, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
+		SLE_CONDNULL_X(1, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
+		SLE_CONDNULL_X(2, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
+
 		     SLE_END()
 	};
 
@@ -799,6 +807,7 @@ const SaveLoad *GetVehicleDescription(VehicleType vt)
 		 SLE_CONDVAR(Aircraft, previous_pos,          SLE_UINT8,                    2, SL_MAX_VERSION),
 		 SLE_CONDVAR(Aircraft, last_direction,        SLE_UINT8,                    2, SL_MAX_VERSION),
 		 SLE_CONDVAR(Aircraft, number_consecutive_turns, SLE_UINT8,                 2, SL_MAX_VERSION),
+		 SLE_CONDNULL_X(2, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
 
 		 SLE_CONDVAR(Aircraft, turn_counter,          SLE_UINT8,                  136, SL_MAX_VERSION),
 		 SLE_CONDVAR(Aircraft, flags,                 SLE_UINT8,                  167, SL_MAX_VERSION),
@@ -813,6 +822,8 @@ const SaveLoad *GetVehicleDescription(VehicleType vt)
 
 		     SLE_VAR(Vehicle, subtype,               SLE_UINT8),
 
+		SLE_CONDNULL_X(5, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
+
 		 SLE_CONDVAR(Vehicle, tile,                  SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
 		 SLE_CONDVAR(Vehicle, tile,                  SLE_UINT32,                   6, SL_MAX_VERSION),
 
@@ -872,6 +883,7 @@ const SaveLoad *GetVehicleDescription(VehicleType vt)
 		 SLE_CONDVAR(DisasterVehicle, image_override,            SLE_UINT32,                 191, SL_MAX_VERSION),
 		 SLE_CONDVAR(DisasterVehicle, big_ufo_destroyer_target,  SLE_FILE_U16 | SLE_VAR_U32,   0, 190),
 		 SLE_CONDVAR(DisasterVehicle, big_ufo_destroyer_target,  SLE_UINT32,                 191, SL_MAX_VERSION),
+		 SLE_CONDNULL_X(2, 0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
 		 SLE_CONDVAR(DisasterVehicle, flags,                     SLE_UINT8,                  194, SL_MAX_VERSION),
 
 		SLE_CONDNULL(16,                                                           2, 143), // old reserved space
diff --git a/src/settings.cpp b/src/settings.cpp
index e0f4a697f5..f2019fdbde 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -2066,24 +2066,27 @@ bool SetSettingValue(uint index, const char *value, bool force_newgame)
 
 /**
  * Given a name of setting, return a setting description of it.
- * @param name  Name of the setting to return a setting description of
- * @param i     Pointer to an integer that will contain the index of the setting after the call, if it is successful.
+ * @param name             Name of the setting to return a setting description of
+ * @param i                Pointer to an integer that will contain the index of the setting after the call, if it is successful.
+ * @param ignore_version   Return a setting even if it not valid for the current savegame version
  * @return Pointer to the setting description of setting \a name if it can be found,
  *         \c NULL indicates failure to obtain the description
  */
-const SettingDesc *GetSettingFromName(const char *name, uint *i)
+const SettingDesc *GetSettingFromName(const char *name, uint *i, bool ignore_version)
 {
 	const SettingDesc *sd;
 
 	/* First check all full names */
 	for (*i = 0, sd = _settings; sd->save.cmd != SL_END; sd++, (*i)++) {
-		if (!SlIsObjectCurrentlyValid(sd->save.version_from, sd->save.version_to, sd->save.ext_feature_test)) continue;
+		if (sd->desc.name == NULL) continue;
+		if (!ignore_version && !SlIsObjectCurrentlyValid(sd->save.version_from, sd->save.version_to, sd->save.ext_feature_test)) continue;
 		if (strcmp(sd->desc.name, name) == 0) return sd;
 	}
 
 	/* Then check the shortcut variant of the name. */
 	for (*i = 0, sd = _settings; sd->save.cmd != SL_END; sd++, (*i)++) {
-		if (!SlIsObjectCurrentlyValid(sd->save.version_from, sd->save.version_to, sd->save.ext_feature_test)) continue;
+		if (sd->desc.name == NULL) continue;
+		if (!ignore_version && !SlIsObjectCurrentlyValid(sd->save.version_from, sd->save.version_to, sd->save.ext_feature_test)) continue;
 		const char *short_name = strchr(sd->desc.name, '.');
 		if (short_name != NULL) {
 			short_name++;
@@ -2094,7 +2097,8 @@ const SettingDesc *GetSettingFromName(const char *name, uint *i)
 	if (strncmp(name, "company.", 8) == 0) name += 8;
 	/* And finally the company-based settings */
 	for (*i = 0, sd = _company_settings; sd->save.cmd != SL_END; sd++, (*i)++) {
-		if (!SlIsObjectCurrentlyValid(sd->save.version_from, sd->save.version_to, sd->save.ext_feature_test)) continue;
+		if (sd->desc.name == NULL) continue;
+		if (!ignore_version && !SlIsObjectCurrentlyValid(sd->save.version_from, sd->save.version_to, sd->save.ext_feature_test)) continue;
 		if (strcmp(sd->desc.name, name) == 0) return sd;
 	}
 
@@ -2206,6 +2210,29 @@ void IConsoleListSettings(const char *prefilter)
 	IConsolePrintF(CC_WARNING, "Use 'setting' command to change a value");
 }
 
+/**
+ * Load handler for settings, which don't go in the PATX chunk, and which are a cross-reference to another setting
+ * @param osd SettingDesc struct containing all information
+ * @param object can be either NULL in which case we load global variables or
+ * a pointer to a struct which is getting saved
+ */
+static void LoadSettingsXref(const SettingDesc *osd, void *object) {
+	DEBUG(sl, 3, "PATS chunk: Loading xref setting: '%s'", osd->xref);
+	uint index = 0;
+	const SettingDesc *setting_xref = GetSettingFromName(osd->xref, &index, true);
+	assert(setting_xref != NULL);
+
+	// Generate a new SaveLoad from the xref target using the version params from the source
+	SaveLoad sld = setting_xref->save;
+	sld.version_from     = osd->save.version_from;
+	sld.version_to       = osd->save.version_to;
+	sld.ext_feature_test = osd->save.ext_feature_test;
+	void *ptr = GetVariableAddress(object, &sld);
+
+	if (!SlObjectMember(ptr, &sld)) return;
+	if (IsNumericType(sld.conv)) Write_ValidateSetting(ptr, setting_xref, ReadValue(ptr, sld.conv));
+}
+
 /**
  * Save and load handler for settings, except for those which go in the PATX chunk
  * @param osd SettingDesc struct containing all information
@@ -2214,9 +2241,15 @@ void IConsoleListSettings(const char *prefilter)
  */
 static void LoadSettings(const SettingDesc *osd, void *object)
 {
+	extern uint16 _sl_version;
+
 	for (; osd->save.cmd != SL_END; osd++) {
 		if (osd->patx_name != NULL) continue;
 		const SaveLoad *sld = &osd->save;
+		if (osd->xref != NULL) {
+			if (sld->ext_feature_test.IsFeaturePresent(_sl_version, sld->version_from, sld->version_to)) LoadSettingsXref(osd, object);
+			continue;
+		}
 		void *ptr = GetVariableAddress(object, sld);
 
 		if (!SlObjectMember(ptr, sld)) continue;
@@ -2238,6 +2271,7 @@ static void SaveSettings(const SettingDesc *sd, void *object)
 	size_t length = 0;
 	for (i = sd; i->save.cmd != SL_END; i++) {
 		if (i->patx_name != NULL) continue;
+		if (i->xref != NULL) continue;
 		length += SlCalcObjMemberLength(object, &i->save);
 	}
 	SlSetLength(length);
diff --git a/src/settings_internal.h b/src/settings_internal.h
index e356e7e5e6..2f0021392f 100644
--- a/src/settings_internal.h
+++ b/src/settings_internal.h
@@ -112,6 +112,7 @@ struct SettingDesc {
 	SettingDescBase desc;   ///< Settings structure (going to configuration file)
 	SaveLoad save;          ///< Internal structure (going to savegame, parts to config)
 	const char *patx_name;  ///< Name to save/load setting from in PATX chunk, if NULL save/load from PATS chunk as normal
+	const char *xref;       ///< Name of SettingDesc to use instead of the contents of this one, useful for loading legacy savegames, if NULL save/load as normal
 
 	bool IsEditable(bool do_command = false) const;
 	SettingType GetType() const;
@@ -126,7 +127,7 @@ struct SettingDesc {
  * offset in a certain struct */
 typedef SettingDesc SettingDescGlobVarList;
 
-const SettingDesc *GetSettingFromName(const char *name, uint *i);
+const SettingDesc *GetSettingFromName(const char *name, uint *i, bool ignore_version = false);
 bool SetSettingValue(uint index, int32 value, bool force_newgame = false);
 bool SetSettingValue(uint index, const char *value, bool force_newgame = false);
 void SetCompanySetting(uint index, int32 value);
diff --git a/src/table/company_settings.ini b/src/table/company_settings.ini
index e49f4094fa..bf3784d577 100644
--- a/src/table/company_settings.ini
+++ b/src/table/company_settings.ini
@@ -20,6 +20,7 @@ static const SettingDesc _company_settings[] = {
 [templates]
 SDT_BOOL = SDT_BOOL($base, $var,        $flags, $guiflags, $def,                        $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
 SDT_VAR  =  SDT_VAR($base, $var, $type, $flags, $guiflags, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
+SDT_NULL =  SDT_NULL($length, $from, $to, $extver),
 SDT_END  = SDT_END()
 
 [defaults]
@@ -74,6 +75,11 @@ base     = CompanySettings
 var      = renew_keep_length
 def      = false
 
+;; allow_autoreplace_to_self
+[SDT_NULL]
+length   = 1
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 2)
+
 [SDT_BOOL]
 base     = CompanySettings
 var      = vehicle.servint_ispercent
diff --git a/src/table/settings.h.preamble b/src/table/settings.h.preamble
index ed67d43c30..9e78a500ff 100644
--- a/src/table/settings.h.preamble
+++ b/src/table/settings.h.preamble
@@ -62,7 +62,7 @@ static size_t ConvertLandscape(const char *value);
 /* Macros for various objects to go in the configuration file.
  * This section is for global variables */
 #define SDTG_GENERAL(name, sdt_cmd, sle_cmd, type, flags, guiflags, var, length, def, min, max, interval, full, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
-	{NSD_GENERAL(name, def, sdt_cmd, guiflags, min, max, interval, full, str, strhelp, strval, proc, NULL, cat), SLEG_GENERAL_X(sle_cmd, var, type | flags, length, from, to, extver), patxname}
+	{NSD_GENERAL(name, def, sdt_cmd, guiflags, min, max, interval, full, str, strhelp, strval, proc, NULL, cat), SLEG_GENERAL_X(sle_cmd, var, type | flags, length, from, to, extver), patxname, NULL}
 
 #define SDTG_VAR(name, type, flags, guiflags, var, def, min, max, interval, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
 	SDTG_GENERAL(name, SDT_NUMX, SL_VAR, type, flags, guiflags, var, 0, def, min, max, interval, NULL, str, strhelp, strval, proc, from, to, cat, extver, patxname)
@@ -83,14 +83,14 @@ static size_t ConvertLandscape(const char *value);
 	SDTG_GENERAL(name, SDT_MANYOFMANY, SL_VAR, type, flags, guiflags, var, 0, def, 0, 0, 0, full, str, strhelp, strval, proc, from, to, cat, extver, patxname)
 
 #define SDTG_NULL(length, from, to, extver)\
-	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLEG_NULL_X(length, from, to, extver), NULL}
+	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLEG_NULL_X(length, from, to, extver), NULL, NULL}
 
-#define SDTG_END() {{NULL, NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLEG_END(), NULL}
+#define SDTG_END() {{NULL, NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLEG_END(), NULL, NULL}
 
 /* Macros for various objects to go in the configuration file.
  * This section is for structures where their various members are saved */
 #define SDT_GENERAL(name, sdt_cmd, sle_cmd, type, flags, guiflags, base, var, length, def, min, max, interval, full, str, strhelp, strval, proc, load, from, to, cat, extver, patxname)\
-	{NSD_GENERAL(name, def, sdt_cmd, guiflags, min, max, interval, full, str, strhelp, strval, proc, load, cat), SLE_GENERAL_X(sle_cmd, base, var, type | flags, length, from, to, extver), patxname}
+	{NSD_GENERAL(name, def, sdt_cmd, guiflags, min, max, interval, full, str, strhelp, strval, proc, load, cat), SLE_GENERAL_X(sle_cmd, base, var, type | flags, length, from, to, extver), patxname, NULL}
 
 #define SDT_VAR(base, var, type, flags, guiflags, def, min, max, interval, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
 	SDT_GENERAL(#var, SDT_NUMX, SL_VAR, type, flags, guiflags, base, var, 1, def, min, max, interval, NULL, str, strhelp, strval, proc, NULL, from, to, cat, extver, patxname)
@@ -114,7 +114,7 @@ static size_t ConvertLandscape(const char *value);
 	SDT_GENERAL(#var, SDT_MANYOFMANY, SL_VAR, type, flags, guiflags, base, var, 1, def, 0, 0, 0, full, str, strhelp, strval, proc, NULL, from, to, cat, extver, patxname)
 
 #define SDT_NULL(length, from, to, extver)\
-	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_CONDNULL_X(length, from, to, extver), NULL}
+	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_CONDNULL_X(length, from, to, extver), NULL, NULL}
 
 
 #define SDTC_VAR(var, type, flags, guiflags, def, min, max, interval, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
@@ -132,5 +132,8 @@ static size_t ConvertLandscape(const char *value);
 #define SDTC_OMANY(var, type, flags, guiflags, def, max, full, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
 	SDTG_GENERAL(#var, SDT_ONEOFMANY, SL_VAR, type, flags, guiflags, _settings_client.var, 1, def, 0, max, 0, full, str, strhelp, strval, proc, from, to, cat, extver, patxname)
 
-#define SDT_END() {{NULL, NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_END(), NULL}
+#define SDT_XREF(from, to, extver, xref)\
+	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_CONDNULL_X(0, from, to, extver), NULL, xref}
+
+#define SDT_END() {{NULL, NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_END(), NULL, NULL}
 
diff --git a/src/table/settings.ini b/src/table/settings.ini
index 80c0847e8a..475329b710 100644
--- a/src/table/settings.ini
+++ b/src/table/settings.ini
@@ -81,6 +81,7 @@ SDT_OMANY  =  SDT_OMANY($base, $var, $type, $flags, $guiflags, $def,
 SDT_STR    =    SDT_STR($base, $var, $type, $flags, $guiflags, $def,                              $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
 SDT_VAR    =    SDT_VAR($base, $var, $type, $flags, $guiflags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
 SDT_NULL   =   SDT_NULL($length, $from, $to, $extver),
+SDT_XREF     = SDT_XREF(         $from, $to, $extver, $xref),
 SDT_END    = SDT_END()
 
 [defaults]
@@ -97,6 +98,7 @@ to       = SL_MAX_VERSION
 cat      = SC_ADVANCED
 extver   = SlXvFeatureTest()
 patxname = NULL
+xref     = <this parameter must be set>
 
 
 
@@ -335,6 +337,14 @@ min      = 0
 max      = 3
 cat      = SC_BASIC
 
+[SDT_XREF]
+xref     = ""order.timetable_automated""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+[SDT_XREF]
+xref     = ""order.timetable_separation""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDT_BOOL]
 base     = GameSettings
 var      = order.timetable_automated
@@ -435,6 +445,7 @@ strhelp  = STR_CONFIG_SETTING_MAX_HEIGHTLEVEL_HELPTEXT
 strval   = STR_JUST_INT
 proc     = ChangeMaxHeightLevel
 cat      = SC_BASIC
+extver   = SlXvFeatureTest(XSLFTO_OR, XSLFI_HEIGHT_8_BIT)
 
 [SDT_BOOL]
 base     = GameSettings
@@ -562,6 +573,10 @@ str      = STR_CONFIG_SETTING_MAX_BRIDGE_LENGTH
 strhelp  = STR_CONFIG_SETTING_MAX_BRIDGE_LENGTH_HELPTEXT
 strval   = STR_CONFIG_SETTING_TILE_LENGTH
 
+[SDT_XREF]
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 2)
+xref     = ""construction.simulated_wormhole_signals""
+
 [SDT_VAR]
 base     = GameSettings
 var      = construction.max_bridge_height
@@ -606,7 +621,11 @@ from     = 0
 cat      = SC_BASIC
 patxname = ""signal_tunnel_bridge.construction.simulated_wormhole_signals""
 
-# construction.longbridges
+[SDT_XREF]
+xref     = ""construction.maximum_signal_evaluations""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+;; construction.longbridges
 [SDT_NULL]
 length   = 1
 to       = 158
@@ -648,6 +667,16 @@ strhelp  = STR_CONFIG_SETTING_TOWN_LAYOUT_HELPTEXT
 strval   = STR_CONFIG_SETTING_TOWN_LAYOUT_DEFAULT
 proc     = TownFoundingChanged
 
+;; economy.town_construction_cost
+[SDT_NULL]
+length   = 1
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+;; economy.station_rating_type
+[SDT_NULL]
+length   = 1
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDT_BOOL]
 base     = GameSettings
 var      = economy.allow_town_roads
@@ -657,6 +686,10 @@ def      = true
 str      = STR_CONFIG_SETTING_ALLOW_TOWN_ROADS
 strhelp  = STR_CONFIG_SETTING_ALLOW_TOWN_ROADS_HELPTEXT
 
+[SDT_XREF]
+xref     = ""economy.town_cargo_factor""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDT_VAR]
 base     = GameSettings
 var      = economy.found_town
@@ -1030,6 +1063,11 @@ def      = false
 str      = STR_CONFIG_SETTING_NEVER_EXPIRE_VEHICLES
 strhelp  = STR_CONFIG_SETTING_NEVER_EXPIRE_VEHICLES_HELPTEXT
 
+;; vehicle.exact_intro_date
+[SDT_NULL]
+length   = 1
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDT_VAR]
 base     = GameSettings
 var      = vehicle.max_trains
@@ -1171,6 +1209,11 @@ strhelp  = STR_CONFIG_SETTING_FREIGHT_TRAINS_HELPTEXT
 strval   = STR_JUST_COMMA
 proc     = UpdateConsists
 
+;; vehicle.freight_mult_to_passengers
+[SDT_NULL]
+length   = 1
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 ; order.timetabling
 [SDT_NULL]
 length   = 1
@@ -1214,6 +1257,10 @@ strhelp  = STR_CONFIG_SETTING_PLANE_CRASHES_HELPTEXT
 strval   = STR_CONFIG_SETTING_PLANE_CRASHES_NONE
 cat      = SC_BASIC
 
+[SDT_XREF]
+xref     = ""vehicle.improved_breakdowns""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDT_BOOL]
 base     = GameSettings
 var      = vehicle.improved_breakdowns
@@ -1246,6 +1293,12 @@ var      = order.selectgoods
 def      = true
 cat      = SC_EXPERT
 
+;; economy.deliver_goods
+;; vehicle.cargo_wait_time
+[SDT_NULL]
+length   = 2
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDTC_BOOL]
 var      = gui.sg_new_nonstop
 from     = 22
@@ -1339,6 +1392,16 @@ str      = STR_CONFIG_SETTING_DISTANT_JOIN_STATIONS
 strhelp  = STR_CONFIG_SETTING_DISTANT_JOIN_STATIONS_HELPTEXT
 proc     = DeleteSelectStationWindow
 
+;; construction.traffic_lights
+;; construction.towns_build_traffic_lights
+;; construction.allow_building_tls_in_towns
+;; construction.traffic_lights_green_phase
+;; construction.max_tlc_size
+;; construction.max_tlc_distance
+[SDT_NULL]
+length   = 6
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 ##
 [SDT_BOOL]
 base     = GameSettings
@@ -1396,10 +1459,22 @@ def      = false
 str      = STR_CONFIG_SETTING_MULTIPINDTOWN
 strhelp  = STR_CONFIG_SETTING_MULTIPINDTOWN_HELPTEXT
 
+;; economy.allow_automatic_industries
+[SDT_NULL]
+length   = 1
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP, 3)
+
 [SDT_NULL]
 length   = 1
 to       = 140
 
+;; economy.minimum_distance_town
+;; economy.minimum_distance_industry
+;; economy.minimum_distance_ind_town
+[SDT_NULL]
+length   = 6
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDT_BOOL]
 base     = GameSettings
 var      = economy.bribe
@@ -1511,6 +1586,59 @@ strhelp  = STR_CONFIG_SETTING_FEEDER_PAYMENT_SHARE_HELPTEXT
 strval   = STR_CONFIG_SETTING_PERCENTAGE
 cat      = SC_EXPERT
 
+[SDT_XREF]
+xref     = ""economy.day_length_factor""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+;; economy.price_mult[0-70]
+[SDT_NULL]
+length   = 71
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+;; economy.price_rails[0-15]
+[SDT_NULL]
+length   = 16
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+;; economy.rail_maintenance[0-15]
+[SDT_NULL]
+length   = 16
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+; note that this has changed format in SpringPP 2.1.147
+[SDT_XREF]
+xref     = ""vehicle.pay_for_repair""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+[SDT_XREF]
+xref     = ""vehicle.repair_cost""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+;; economy.town_consumption_rate
+[SDT_NULL]
+length   = 1
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+;; economy.town_pop_*
+[SDT_NULL]
+length   = 6
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+;; economy.town_consumption_rates[0-2][0-2]
+[SDT_NULL]
+length   = 18
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+;; economy.town_effects[0-2]
+[SDT_NULL]
+length   = 3
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+;; economy.grow_if_one_delivered
+[SDT_NULL]
+length   = 1
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDT_VAR]
 base     = GameSettings
 var      = economy.town_growth_rate
@@ -1558,6 +1686,43 @@ from     = 77
 def      = true
 cat      = SC_EXPERT
 
+
+[SDT_XREF]
+xref     = ""economy.infrastructure_sharing[0]""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+[SDT_XREF]
+xref     = ""economy.infrastructure_sharing[1]""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+[SDT_XREF]
+xref     = ""economy.infrastructure_sharing[2]""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+[SDT_XREF]
+xref     = ""economy.infrastructure_sharing[3]""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+[SDT_XREF]
+xref     = ""economy.sharing_fee[0]""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+[SDT_XREF]
+xref     = ""economy.sharing_fee[1]""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+[SDT_XREF]
+xref     = ""economy.sharing_fee[2]""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+[SDT_XREF]
+xref     = ""economy.sharing_fee[3]""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
+[SDT_XREF]
+xref     = ""economy.sharing_payment_in_debt""
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDT_VAR]
 base     = GameSettings
 var      = construction.maximum_signal_evaluations
@@ -2015,6 +2180,11 @@ min      = 0
 max      = 100000
 cat      = SC_EXPERT
 
+# pf.npf.npf_road_trafficlight_penalty
+[SDT_NULL]
+length   = 4
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDT_VAR]
 base     = GameSettings
 var      = pf.npf.npf_road_dt_occupied_penalty
@@ -2320,6 +2490,11 @@ min      = 0
 max      = 1000000
 cat      = SC_EXPERT
 
+# pf.yapf.road_trafficlight_penalty
+[SDT_NULL]
+length   = 4
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)
+
 [SDT_VAR]
 base     = GameSettings
 var      = pf.yapf.road_stop_penalty
diff --git a/src/tracerestrict.cpp b/src/tracerestrict.cpp
index 968a22c8ea..10fa437e41 100644
--- a/src/tracerestrict.cpp
+++ b/src/tracerestrict.cpp
@@ -559,7 +559,7 @@ void SetTraceRestrictTypeAndNormalise(TraceRestrictItem &item, TraceRestrictItem
  * Sets the "signal has a trace restrict mapping" bit
  * This looks for mappings with that tile index
  */
-void SetIsSignalRestrictedBit(TileIndex t)
+void TraceRestrictSetIsSignalRestrictedBit(TileIndex t)
 {
 	// First mapping for this tile, or later
 	TraceRestrictMapping::iterator lower_bound = _tracerestrictprogram_mapping.lower_bound(MakeTraceRestrictRefId(t, static_cast<Track>(0)));
@@ -590,7 +590,7 @@ void TraceRestrictCreateProgramMapping(TraceRestrictRefId ref, TraceRestrictProg
 
 	TileIndex tile = GetTraceRestrictRefIdTileIndex(ref);
 	Track track = GetTraceRestrictRefIdTrack(ref);
-	SetIsSignalRestrictedBit(tile);
+	TraceRestrictSetIsSignalRestrictedBit(tile);
 	MarkTileDirtyByTile(tile);
 	YapfNotifyTrackLayoutChange(tile, track);
 }
@@ -614,7 +614,7 @@ void TraceRestrictRemoveProgramMapping(TraceRestrictRefId ref)
 
 		TileIndex tile = GetTraceRestrictRefIdTileIndex(ref);
 		Track track = GetTraceRestrictRefIdTrack(ref);
-		SetIsSignalRestrictedBit(tile);
+		TraceRestrictSetIsSignalRestrictedBit(tile);
 		MarkTileDirtyByTile(tile);
 		YapfNotifyTrackLayoutChange(tile, track);
 
diff --git a/src/tracerestrict.h b/src/tracerestrict.h
index 6913234bc7..b2f01f2649 100644
--- a/src/tracerestrict.h
+++ b/src/tracerestrict.h
@@ -489,6 +489,7 @@ static inline Track GetTraceRestrictRefIdTrack(TraceRestrictRefId ref)
 	return static_cast<Track>(ref & 7);
 }
 
+void TraceRestrictSetIsSignalRestrictedBit(TileIndex t);
 void TraceRestrictCreateProgramMapping(TraceRestrictRefId ref, TraceRestrictProgram *prog);
 void TraceRestrictRemoveProgramMapping(TraceRestrictRefId ref);