diff --git a/lua/metrostroi/systems/sys_81_722_bukp.lua b/lua/metrostroi/systems/sys_81_722_bukp.lua
index 02ce486..ba638ec 100644
--- a/lua/metrostroi/systems/sys_81_722_bukp.lua
+++ b/lua/metrostroi/systems/sys_81_722_bukp.lua
@@ -382,7 +382,6 @@ function TRAIN_SYSTEM:Think(dT)
         self:CState("CloseDoors",RR and Train.SF7.Value>0 and (Train.DoorClose.Value == 0 or (not self.CloseRing and Train.DoorClose.Value==2 or self.CloseRing and CurTime()-self.CloseRing>4)))
         self:CState("PassLight",Train.PassLight.Value>0)
         self:CState("PassVent",Train.PassVent.Value-1)
-        self:CState("ParkingBrake",Train.ParkingBrake.Value)
         if BARSPower and Train.BARS.V2 > 0 or not BARSPower and math.abs(self.Speed) < 0.5 and self.PowerCommand < 0 then
             self.StopV2 = true
         elseif self.PowerCommand > 0 then
diff --git a/lua/metrostroi/systems/sys_81_722_bukv.lua b/lua/metrostroi/systems/sys_81_722_bukv.lua
index 753225d..6fe93e7 100644
--- a/lua/metrostroi/systems/sys_81_722_bukv.lua
+++ b/lua/metrostroi/systems/sys_81_722_bukv.lua
@@ -276,7 +276,6 @@ function TRAIN_SYSTEM:Think()
     self.EnableMK = (not self:Get("PVU4") and self:Get("Compressor")) and 1 or 0
     self.DisableTP = (self:Get("PVU5") or self:Get("PVU6")) and 1 or 0
     self.DisablePant = (self:Get("DisablePant") or self:Get("PVU7")) and 1 or 0
-    self.ParkingBrake = self:Get("ParkingBrake")
     local vent = self:Get("PassVent") or 0
     if vent==1 then
         self.VentMode = Train.Pneumatic.WeightLoadRatio>0.6 and 2 or Train.Pneumatic.WeightLoadRatio>0.1 and 1 or 0
diff --git a/lua/metrostroi/systems/sys_81_722_pneumatic.lua b/lua/metrostroi/systems/sys_81_722_pneumatic.lua
index 74c1429..11a6c3b 100644
--- a/lua/metrostroi/systems/sys_81_722_pneumatic.lua
+++ b/lua/metrostroi/systems/sys_81_722_pneumatic.lua
@@ -43,8 +43,6 @@ function TRAIN_SYSTEM:Initialize()
 
     self.V4 = false --Включение РУ
     
-    self.ParkingBrake = -1
-
     self.K1 = false
     self.K2 = false
     self.SD2 = 0
@@ -438,17 +436,10 @@ function TRAIN_SYSTEM:Think(dT)
     else
         self:equalizePressure(dT,"BrakeCylinderPressure", 0.0, 2.00)
     end
-    if Train:ReadTrainWire(11)*(1-Train:ReadTrainWire(31)) == 1 then
-        self.ParkingBrake = 1
-    elseif Train:ReadTrainWire(31)*(1-Train:ReadTrainWire(11)) == 1 then
-        self.ParkingBrake = 0
-    elseif Train:ReadTrainWire(11)+Train:ReadTrainWire(31) == 2 then
-        self.ParkingBrake = -1 --блокировка
-    end
-    
-    if self.ParkingBrake == 1 then
+    local w11, w31 = Train:ReadTrainWire(11), Train:ReadTrainWire(31)
+    if w11*(1-w31) > 0 then
         self:equalizePressure(dT,"ParkingBrakePressure", 0, 0.4,1,nil,0.5)
-    elseif self.ParkingBrake == 0 then
+    elseif w31*(1-w11) > 0 then
         self:equalizePressure(dT,"ParkingBrakePressure", self.TrainLinePressure, 0.4,1,nil,0.5)
     end
     Train:SetPackedRatio("ParkingBrakePressure_dPdT",self.ParkingBrakePressure_dPdT+0.02)