Traffic light by multi-threading in C#

traffic signal\_UpgradeReport_Files
..............\....................\UpgradeReport.css
..............\....................\UpgradeReport.xslt
..............\....................\UpgradeReport_Minus.gif
..............\....................\UpgradeReport_Plus.gif
..............\Backup
..............\......\Form1.cs
..............\......\Form1.Designer.cs
..............\......\Form1.resx
..............\......\Program.cs
..............\......\Properties
..............\......\..........\AssemblyInfo.cs
..............\......\..........\Resources.Designer.cs
..............\......\..........\Resources.resx
..............\......\..........\Settings.Designer.cs
..............\......\..........\Settings.settings
..............\......\traffic signal.csproj
..............\......\traffic signal.sln
..............\......\traffic signal.suo
..............\bin
..............\...\Debug
..............\...\.....\tarffic signal.exe
..............\...\.....\tarffic signal.pdb
..............\...\.....\tarffic signal.vshost.exe
..............\...\.....\tarffic signal.vshost.exe.manifest
..............\Form1.cs
..............\Form1.Designer.cs
..............\Form1.resx
..............\obj
..............\...\Debug
..............\...\.....\Refactor
..............\...\.....\tarffic signal.csproj.GenerateResource.Cache
..............\...\.....\tarffic signal.exe
..............\...\.....\tarffic signal.pdb
..............\...\.....\tarffic_signal.Properties.Resources.resources
..............\...\.....\TempPE
..............\...\.....\......\Properties.Resources.Designer.cs.dll
..............\...\.....\traffic signal.csproj.FileListAbsolute.txt
..............\...\.....\traffic signal.csproj.GenerateResource.Cache
..............\...\.....\traffic_signal.Traffic_Light.resources
..............\...\tarffic signal.csproj.FileListAbsolute.txt
..............\...\traffic signal.csproj.FileListAbsolute.txt
..............\Pic
..............\...\g.png
..............\...\r.png
..............\...\y.png
..............\Program.cs
..............\Properties
..............\..........\AssemblyInfo.cs
..............\..........\Resources.Designer.cs
..............\..........\Resources.resx
..............\..........\Settings.Designer.cs
..............\..........\Settings.settings
..............\traffic signal.csproj
..............\traffic signal.sln
..............\traffic signal.suo
..............\UpgradeLog.XML

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