diff --git a/station_2_6.lua b/station_2_6.lua
index fc2bf7e..3afa232 100644
--- a/station_2_6.lua
+++ b/station_2_6.lua
@@ -59,7 +59,7 @@ local redirect_tb=
     ["k6"]={redout3,sides.west},
     
     ["ab_ko"]={redout4,sides.north},
-    ["ba_ko"]={redout4,sides.east}
+    ["ba_ko"]={redout4,sides.east},
 
     ["last_unused"]={"unused",sides.north}
 }
@@ -115,27 +115,663 @@ local function train_delegator(Name,callback_func)
 end
 
 -- Data for 6 ways.
-local freeway={true,true,true,true,true,true} 
+local isfree={true,true,true,true,true,true} 
 local timerid={0,0,0,0,0,0}
 local timecnt={0,0,0,0,0,0}
-local revflag={0,0,0,0,0,0}
+local revflag={false,false,false,false,false,false}
 local ab_timerid_out,ab_time_out=0,0
 local ba_timerid_out,ba_time_out=0,0
+local _side_line_free=true
+local _side_line_hw=true
+
+local function isSideLineFree()
+    return _side_line_free and _side_line_hw
+end
+
+local function lockSideLine()
+    _side_line_free=false
+end
+
+local function unlockSideLine()
+    _side_line_free=true
+end
 
 local bus=Queue.new()
 
 local function doInit()
+    evl:push(AddEventListener("interrupted",
+    function()
+        bus:push("stop")
+    end))
+
     train_delegator("ab_st",
         function(from,to)
             if(from<to) then
                 bus:push("ab_new_train")
             end
         end)
-    train_delegator("s1",
+    
+    train_delegator("ba_st",
         function(from,to)
             if(from<to) then
-                bus:push("s1_ready")
+                bus:push("ba_new_train")
+            end
+        end)
+
+    train_delegator("st_l",
+        function(from,to)
+            if(from<to) then
+                _side_line_hw=true
+            else
+                _side_line_hw=false
             end
         end)
     
-end
\ No newline at end of file
+    local smt={"s1","s2","s3","s4","s5","s6"}
+    for k,v in pairs(smt) do
+        train_delegator(v,
+        function(from,to)
+            if(from<to) then
+                bus:push(v.. "_ready")
+            end
+        end)
+    end
+end
+
+local function doCleanUp()
+    while(evl:top()~=nil) do
+        RemoveEventListener(evl:pop())
+    end
+end
+
+local function doClearOutput()
+    local smt=
+    {"m1","m2","m3","m4","m5","m6","k1","k2","k3","k4","k5","k6","ab_ko","ba_ko"}
+
+    for k,v in pairs(smt) do
+        disabledevice(v)
+    end
+end
+
+local function doCheck()
+    for k,vt in pairs(redirect_tb) do
+        if(vt[1]==nil) then
+            error("Check Failed. Please review your redstone configure")
+        end
+    end
+
+    print("Check Pass.")
+end
+
+local function TCSMain()
+    doCheck()
+    doClearOutput()
+    doInit()
+
+    print("TCS Started. Press Ctrl+C to stop.")
+
+    -- Main Processing Loop
+    local running=true
+    while(running) do
+        os.sleep(0.25) -- Shorter sleep, faster program.
+        
+        local ev="no_event"
+        if(ebus:top()~=nil) then
+            ev=ebus:pop() -- Notice: Event is already poped.
+        end
+        
+        -- For Debug: Print Event Name
+        if(ev~="no_event") then
+            print(ev)
+        end
+
+        if(ev=="no_event") then
+            -- No event, no action.
+        elseif(ev=="stop") then
+            running=false
+        elseif(ev=="ab_new_train") then
+            local act=false
+            if(readdevice("ab_sr")>0) then -- Train will stop
+                if(readdevice("ab_sv")>0) then -- Train will reverse
+                    if(isfree[1]) then -- Train --> Way1
+                        isfree[1]=false
+                        revflag[1]=true
+
+                        disabledevice("m6")
+                        enabledevice("m1")
+                        disabledevice("k1")
+                        act=true
+                    elseif(isfree[2]) then -- Train --> Way2
+                        isfree[2]=false
+                        revflag[2]=true
+
+                        disabledevice("m6")
+                        disabledevice("m1")
+                        enabledevice("m2")
+                        disabledevice("k2")
+                        act=true
+                    elseif(isfree[6]) then -- Train --> Way6
+                        isfree[6]=false
+                        revflag[6]=true
+                        
+                        enabledevice("m6")
+                        disabledevice("k6")
+                        act=true
+                    end
+                else -- Train does not need reverse
+                    if(isfree[1]) then -- Train --> Way1
+                        isfree[1]=false
+                        revflag[1]=false
+
+                        disabledevice("m6")
+                        enabledevice("m1")
+                        disabledevice("k1")
+                        act=true
+                    elseif(isfree[2]) then -- Train --> Way2
+                        isfree[2]=false
+                        revflag[2]=false
+
+                        disabledevice("m6")
+                        disabledevice("m1")
+                        enabledevice("m2")
+                        disabledevice("k2")
+                        act=true
+                    end -- None-reverse train should not enter 6
+                end
+            else -- Train will pass
+                if(isfree[3]) then -- Train --> Way3
+                    isfree[3]=false
+                    if(readdevice("ab_sv")>0) then -- Train will reverse
+                        revflag[3]=true
+                    else
+                        revflag[3]=false
+                    end
+                    
+                    disabledevice("m6")
+                    disabledevice("m1")
+                    disabledevice("m2")
+                    disabledevice("k3")
+                    act=true
+                end
+            end
+
+            if(act) then
+                enabledevice("ab_ko")
+                os.sleep(0.25)
+                disabledevice("ab_ko")
+            else
+                bus:push(ev)
+            end
+        elseif(ev=="ba_new_train") then
+            local act=false
+            if(readdevice("ba_sr")>0) then -- Train will stop
+                if(readdevice("ba_sv")>0) then -- Train will reverse
+                    if(isfree[5]) then -- Train --> Way5 (will reverse)
+                        isfree[5]=false
+                        revflag[5]=true
+
+                        enabledevice("m4")
+                        disabledevice("k5")
+                        act=true
+                    end
+                else -- Train does not need reverse
+                    if(isfree[5]) then -- Train --> Way5 (will not reverse)
+                        isfree[5]=false
+                        revflag[5]=false
+
+                        enabledevice("m4")
+                        disabledevice("k5")
+                        act=true
+                    end
+                end
+            else -- Train will pass
+                if(readdevice("ba_sv")>0) then -- Train will reverse
+                    if(isfree[5]) then -- Train --> Way5 (will not reverse)
+                        isfree[5]=false
+                        revflag[5]=true
+
+                        enabledevice("m4")
+                        disabledevice("k5")
+                        act=true
+                    end
+                else -- Train does not need reverse
+                    if(isfree[4]) then
+                        isfree[4]=false
+                        revflag[4]=false
+                        
+                        disabledevice("m4")
+                        disabledevice("k4")
+                        act=true
+                    elseif(isfree[5]) then 
+                        isfree[5]=false
+                        revflag[5]=false
+
+                        enabledevice("m4")
+                        disabledevice("k5")
+                        act=true
+                    end
+                end
+            end
+            
+            if(act) then
+                enabledevice("ba_ko")
+                os.sleep(0.25)
+                disabledevice("ba_ko")
+            else
+                bus:push(ev)
+            end
+        elseif(ev=="s1_ready") then -- Add in-station timer
+            timecnt[1]=1
+            timerid[1]=AddTimer(1,
+                function()
+                    timecnt[1]=timecnt[1]+1
+                    if(timecnt[1]==5) then
+                        bus:push("s1_timeout")
+                    end
+                end,-1)
+        elseif(ev=="s2_ready") then -- Add in-station timer
+            timecnt[2]=1
+            timerid[2]=AddTimer(1,
+                function()
+                    timecnt[2]=timecnt[2]+1
+                    if(timecnt[2]==5) then
+                        bus:push("s2_timeout")
+                    end
+                end,-1)
+        elseif(ev=="s3_ready") then -- Judge or turn on timer
+            local needtimer=false
+            if(revflag[3]) then -- Need rev. Go line 4 or line 5
+                if(isfree[4]) then -- Way 3 --> Way 4
+                    if(isSideLineFree()) then
+                        isfree[4]=false
+                        revflag[4]=false
+                        
+                        lockSideLine()
+                        disabledevice("m3")
+                        disabledevice("m4")
+                        disabledevice("k4")
+                        enabledevice("k3")
+                        os.sleep(0.25)
+                        disabledevice("k3")
+                        os.sleep(3)
+                        unlockSideLine()
+                    else
+                        needtimer=true
+                    end
+                elseif(isfree[5]) then -- Way 3 --> Way 5
+                    if(isSideLineFree()) then
+                        isfree[5]=false
+                        revflag[5]=false
+                        lockSideLine()
+                        disabledevice("m3")
+                        enabledevice("m4")
+                        disabledevice("k5")
+                        enabledevice("k3")
+                        os.sleep(0.25)
+                        disabledevice("k3")
+                        os.sleep(3)
+                        unlockSideLine()
+                    else
+                        needtimer=true
+                    end
+                end
+            else -- way 3 does not need rev
+                if(isSideLineFree()) then
+                    lockSideLine()
+                    enabledevice("m3")
+                    enabledevice("k3")
+                    os.sleep(0.25)
+                    disabledevice("k3")
+                    os.sleep(3)
+                    unlockSideLine()
+                else
+                    needtimer=true
+                end
+            end
+            if(needtimer) then -- We need a timer... (can't move, sad >_<)
+                timecnt[3]=1
+                timerid[3]=AddTimer(1,
+                    function()
+                        timecnt[3]=timecnt[3]+1
+                    end,-1)
+                bus:push("s3_pending") -- Tell scheduler Way 3 is pending
+            else -- Yeah! Moved directly! Now we mark way 3 as free
+                isfree[3]=true
+            end
+        elseif(ev=="s4_ready") then
+            local act=false
+            if(ba_time_out==0 and readdevice("ba_lout")>0) then -- Can let go
+                if(isfree[5] or revflag[5]==true) then -- Way5 is free or Way5 will reverse
+                    act=true
+                end
+            end
+
+            if(act) then
+                -- Add BA Timer
+                ba_time_out=1
+                ba_timerid_out=AddTimer(1,
+                    function()
+                        ba_time_out=ba_time_out+1
+                        if(ba_time_out==8) then
+                            bus:push("ba_time_out_needstop")
+                        end
+                    end,-1)
+                enabledevice("k4")
+                os.sleep(0.25)
+                disabledevice("k4")
+                isfree[4]=true
+            else
+                timecnt[4]=0
+                timerid[4]=AddTimer(1,
+                    function()
+                        timecnt[4]=timecnt[4]+1
+                    end,-1)
+                bus:push("s4_pending") -- Tell scheduler Way 4 is pending
+            end
+        elseif(ev=="s5_ready") then -- Train must stay at way5 whether it wants to stop or not.
+            timecnt[5]=1
+            timerid[5]=AddTimer(1,
+                function()
+                    timecnt[5]=timecnt[5]+1
+                    if(timecnt[5]==5) then
+                        bus:push("s5_timeout")
+                    end
+                end,-1)
+        elseif(ev=="s6_ready") then
+            timecnt[6]=1
+            timerid[6]=AddTimer(1,
+                function()
+                    timecnt[6]=timecnt[6]+1
+                    if(timecnt[6]==5) then
+                        bus:push("s6_timeout")
+                    end
+                end,-1)
+        elseif(ev=="s1_timeout") then
+            local done=false
+            if(isSideLineFree()) then -- Side line must be free(or we can't move at all)
+                if(revflag[1]) then -- Way1 need reverse
+                    if(isfree[4]) then -- Way 1 --> Way 4
+                        done=true
+                        lockSideLine()
+                        isfree[4]=false
+                        revflag[4]=false
+                        disabledevice("m3")
+                        disabledevice("m4")
+                        disabledevice("k4")
+                        
+                        enabledevice("k1")
+                        os.sleep(3)
+                        disabledevice("k1")
+                        
+                        unlockSideLine()
+                    elseif(isfree[5]) then --- Way1 --> Way5
+                        done=true
+                        lockSideLine()
+                        isfree[5]=false
+                        revflag[5]=false
+                        disabledevice("m3")
+                        enabledevice("m4")
+                        disabledevice("k5")
+
+                        enabledevice("k1")
+                        os.sleep(3)
+                        disabledevice("k1")
+                        
+                        unlockSideLine()
+                    end
+                else -- Way 1 does not need reverse
+                    if(readdevice("ab_lout")>0) then -- Can move to next station (B)
+                        done=true
+                        lockSideLine()
+                        enabledevice("m3")
+
+                        enabledevice("k1")
+                        os.sleep(3)
+                        disabledevice("k1")
+                        
+                        unlockSideLine()
+                    end
+                end
+            end
+
+            if(done) then -- Clear way1
+                isfree[1]=true
+            else
+                bus:push(ev)
+            end
+        elseif(ev=="s2_timeout") then
+            local done=false
+            if(isSideLineFree()) then -- Side line must be free(or we can't move at all)
+                if(revflag[2]) then -- Way2 need reverse
+                    if(isfree[4]) then -- Way 2 --> Way 4
+                        done=true
+                        lockSideLine()
+                        isfree[4]=false
+                        revflag[4]=false
+                        disabledevice("m3")
+                        disabledevice("m4")
+                        disabledevice("k4")
+                        
+                        enabledevice("k2")
+                        os.sleep(3)
+                        disabledevice("k2")
+                        
+                        unlockSideLine()
+                    elseif(isfree[5]) then --- Way2 --> Way5
+                        done=true
+                        lockSideLine()
+                        isfree[5]=false
+                        revflag[5]=false
+                        disabledevice("m3")
+                        enabledevice("m4")
+                        disabledevice("k5")
+
+                        enabledevice("k2")
+                        os.sleep(3)
+                        disabledevice("k2")
+                        
+                        unlockSideLine()
+                    end
+                else -- Way 2 does not need reverse
+                    if(readdevice("ab_lout")>0) then -- Can move to next station (B)
+                        done=true
+                        lockSideLine()
+                        enabledevice("m3")
+
+                        enabledevice("k2")
+                        os.sleep(3)
+                        disabledevice("k2")
+                        
+                        unlockSideLine()
+                    end
+                end
+            end
+
+            if(done) then -- Clear way2
+                isfree[2]=true
+            else
+                bus:push(ev)
+            end
+        elseif(ev=="s6_timeout") then
+            local done=false
+            if(isSideLineFree()) then -- Side line must be free(or we can't move at all)
+                if(revflag[6]) then -- Way6 need reverse
+                    if(isfree[4]) then -- Way 6 --> Way 4
+                        done=true
+                        lockSideLine()
+                        isfree[4]=false
+                        revflag[4]=false
+                        disabledevice("m3")
+                        disabledevice("m4")
+                        disabledevice("k4")
+                        
+                        enabledevice("k6")
+                        os.sleep(3)
+                        disabledevice("k6")
+                        
+                        unlockSideLine()
+                    elseif(isfree[5]) then --- Way6 --> Way5
+                        done=true
+                        lockSideLine()
+                        isfree[5]=false
+                        revflag[5]=false
+                        disabledevice("m3")
+                        enabledevice("m4")
+                        disabledevice("k5")
+
+                        enabledevice("k6")
+                        os.sleep(3)
+                        disabledevice("k6")
+                        
+                        unlockSideLine()
+                    end
+                else -- Way 6 does not need reverse
+                    if(readdevice("ab_lout")>0) then -- Can move to next station (B)
+                        done=true
+                        lockSideLine()
+                        enabledevice("m3")
+
+                        enabledevice("k6")
+                        os.sleep(3)
+                        disabledevice("k6")
+                        
+                        unlockSideLine()
+                    end
+                end
+            end
+
+            if(done) then -- Clear way6
+                isfree[6]=true
+            else
+                bus:push(ev)
+            end
+        elseif(ev=="s5_timeout") then
+            local done=false
+            if(revflag[5]) then -- Need reverse
+                if(isfree[6]) then
+                    isfree[6]=false
+                    revflag[6]=false
+                    enabledevice("m5")
+                    disabledevice("k6")
+
+                    enabledevice("k5")
+                    os.sleep(0.25)
+                    disabledevice("k5")
+                    
+                    done=true
+                end -- If way6 is not free, we cannot reverse to it. (bang!)
+            else -- Does not need reverse
+                if(ba_time_out==0 and readdevice("ba_lout")>0) then -- Can let go
+                    if(isfree[4] or timecnt[4]==0 or timecnt[5]>timecnt[4]) then -- If Way4 is free, or way4 is not ready, or way5 wait longer
+                        ba_time_out=1
+                        ba_timerid_out=AddTimer(1,
+                            function()
+                                ba_time_out=ba_time_out+1
+                                if(ba_time_out==8) then
+                                    bus:push("ba_time_out_needstop")
+                                end
+                            end,
+                        -1)
+                        disabledevice("m5")
+                        enabledevice("k5")
+                        os.sleep(0.25)
+                        disabledevice("k5")
+
+                        done=true
+                    end -- We just cannot move. (We must wait!)
+                end -- Cannot move at all.
+            end
+            if(done) then
+                isfree[5]=true -- Mark way5 as free
+            else
+                bus:push(ev)
+            end
+        elseif(ev=="s3_pending") then
+            local done=false
+            if(revflag[3]) then -- Need rev. Go line 4 or line 5
+                if(isfree[4]) then -- Way 3 --> Way 4
+                    if(isSideLineFree()) then
+                        isfree[4]=false
+                        revflag[4]=false
+                        
+                        lockSideLine()
+                        disabledevice("m3")
+                        disabledevice("m4")
+                        disabledevice("k4")
+                        enabledevice("k3")
+                        os.sleep(0.25)
+                        disabledevice("k3")
+                        os.sleep(3)
+                        unlockSideLine()
+                        done=true
+                    end
+                elseif(isfree[5]) then -- Way 3 --> Way 5
+                    if(isSideLineFree()) then
+                        isfree[5]=false
+                        revflag[5]=false
+                        lockSideLine()
+                        disabledevice("m3")
+                        enabledevice("m4")
+                        disabledevice("k5")
+                        enabledevice("k3")
+                        os.sleep(0.25)
+                        disabledevice("k3")
+                        os.sleep(3)
+                        unlockSideLine()
+                        done=true
+                    end
+                end
+            else -- way 3 does not need rev
+                if(isSideLineFree()) then
+                    lockSideLine()
+                    enabledevice("m3")
+                    enabledevice("k3")
+                    os.sleep(0.25)
+                    disabledevice("k3")
+                    os.sleep(3)
+                    unlockSideLine()
+                    done=true
+                end
+            end
+            if(done) then -- mark way 3 as free
+                isfree[3]=true
+            else 
+                bus:push(ev)
+            end
+        elseif(ev=="s4_pending") then 
+            local okay=false
+            if(ba_time_out==0 and readdevice("ba_lout")>0) then -- Can let go
+                if(isfree[5] or revflag[5]==true) then -- Way5 is free or Way5 will reverse
+                    okay=true
+                end
+            end
+
+            if(okay) then
+                -- Add BA Timer
+                ba_time_out=1
+                ba_timerid_out=AddTimer(1,
+                    function()
+                        ba_time_out=ba_time_out+1
+                        if(ba_time_out==8) then
+                            bus:push("ba_time_out_needstop")
+                        end
+                    end,-1)
+                enabledevice("k4")
+                os.sleep(0.25)
+                disabledevice("k4")
+                isfree[4]=true
+            else
+                bus:push(ev)
+            end
+        else -- Unknown event
+            -- Ignore.
+        end -- End of event patch
+    end -- End of loop
+    doCleanUp()
+    doClearOutput()
+end
+
+-- Start-up script
+print("Program Start")
+TCSMain()
+print("Program Stop")