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OpenBveTrainSim\OBTS is a free application for PCs, that runs both newer 3D Content\Addons & older 2D Bve2TrainSim\B2TS + Bve4TrainSim\B4TS Content\Addons from a diverse global User\Developer community. Subway, Tram, LightRail, MainLine, Freight & Passenger content is available, depicting historic & modern trains & routes from the world over. OBTS allows operating a train with a view from the cab of the track ahead, or from lineside while roaming the 3D train exterior & scenery; the goal is to complete a selected route, while obeying Schedules\Signals without Speeding\Derailing.

OBTS runs best under Windows10\8\7 (32\64bit); it can be made to run under WindowsXP\Vista\Unix\Linux\MacOSX, though these operating systems are NOT fully compatible with all Addon DLL PlugIns. OBTS source code, compiled code, documents & addons have no registered CopyRight\Patent\TradeMark & are free to DownLoad\Use\Modify\UpLoad\Share.

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OBTS Features

Menu Selectable Route+Train Combinations
Menu Selectable Cab\Roaming\RunBy\Helicopter Views
Menu Selectable Screen Resolution+Filtering
Supports GIF+BMP+PNG Images\Textures & WAV Sounds
Supports ThreeDimensional Animated+B3D+CSV+X Object Formats
Supports ThreeDimensional CSV+RW Route Formats
Supports ThreeDimensional Cabs+Exteriors & TwoDimensional Legacy\B2TS\B4TS Cabs
Supports Train Custom Controls Via DLL PlugIns

OBTS Recommended Minimum PC Specs

Intel\AMD 2.6GHz CentralProcessor + 4GB CentralRAM
Nvidia\ATI GraphicProcessor + 128MB GraphicRAM, SharedRAM Graphics NOT Recommended
SolidStateDrive C With 60GB Available Space, Legacy HardDiskDrives Are NOT Recommended
15"Display Set For 1366x768 32Bit Resolution + Stereo Speakers
104 KeyBoard + 3Button Mouse, Optional JoyStick
Windows10\8\7 32\64Bit OperatingSystem

OBTS Programs & Documents

OpenBveTrainSim\OBTS programs & Route\Train addons are typically UpLoaded\Published as ZIP\RAR\TAR.GZ\7Z archive files, which are Extracted\UnZipped after download; so before downloading any Program\Addon, first download & install the free 7Zip Archive Manager, which handles new & legacy archive formats (ZIP, RAR, EXE, CAB, TAR, 7Z, etc); older archivers (WinZIP, WinRAR, etc) are NOT recommended, as they may not Read\Extract newer formats. After 7Zip is installed, then download & install the OBTS program + addons per the links & instructions below.

Latest Release Of OBTS Program:

ProgLink CodeLink
DocsLink DocsLink
InfoLink InfoLink InfoLink

OBTS Installation Under Windows10\8\7

OpenBveTrainSim\OBTS program & addon installation requires you have full Admin\Configuration\Owner rights on your PC\OperatingSystem & be able to Extract\Read\Edit\Copy\Move\Paste the associated Folders\Files as needed.

Configure Windows UserAccountControl\UAC as follows:
Make a new folder %AppData%\OpenBve\ with the subfolders listed below.
 %AppData% is a Windows Variable, usually set to "C:\Users\%UserName%\AppData\Roaming"; %UserName% is your login name.
To display & confirm your %AppData% folder & %UserName% settings
on the Windows DeskTop, click "START", click "RUN", then enter "CMD",
at the CMD Prompt, enter "ECHO %AppData%", then enter "ECHO %UserName%".
Right Click each subfolder above & configure for full READ+WRITE+SHARED access.
DownLoad SDL from
Extract the ZIP file to subfolder \OpenBve\Prog\
DownLoad OpenAudioLibrary from
To subfolder \OpenBve\Prog\OpenAL\
Extract the ZIP file & run the installer.
DownLoad your choice of Train addons from
Make a seperate custom named \SUBFOLDER\ for each Train:
\OpenBve\LegacyContent\Train\SUBFOLDER\Train.Dat, Panel.*, Sound.Cfg, Train.Txt, Etc
Right click each subfolder & configure for full READ+WRITE+SHARED access.
DownLoad your choice of Route addons from
Make a seperate custom named \SUBFOLDER\ for each Route:
Right click each subfolder & configure for full READ+WRITE+SHARED access.
DownLoad the OBTS program from
Extract & place these files in folder \OpenBve\Prog\
Right Click the main program \OpenBve\Prog\OPENBVE.EXE
DoubleClick the main program \OpenBve\Prog\OPENBVE.EXE to run
In the OPTIONS menu; select Resolution, Interpolation & other settings per your hardware & preference.
In the ROUTE menu, browse \OpenBve\LegacyContent\RailWay\Route\ & select a subfolder & CSV\RW file.
In the TRAIN menu, browse \OpenBve\LegacyContent\Train\ & select a subfolder.
In the displayed TRAIN.TXT, note the Keys required for train Control+Safeties.
Click START to load & drive the chosen Route+Train.
Loading may take 30sec or more, & varies with the each Route+Train & your PC specs.
When loading completes, the usual view is looking across cab controls at track ahead from the routes first stop.

If OPENBVE.EXE generates an error such as "Access to path C:\... denied" or "Process terminated...", before running the program again, carefully review the install instructions above; insure all Folders\Files are arranged & configured proper, that UserAccessControl\UAC is set as noted, & that dependencies (SDL, OpenAL, etc) are installed. Some AntiVirus programs, such as Avast, are notorious for "false positives" & causing programs to Freeze\Crash; folder \OpenBve\ may need to be set as an AntiVirus scan exception.

OBTS Route & Train Addon Developer Tools

ToolLink ~ OBTS File Editor; Do NOT Use MS-EXCEL To Edit OBTS Files!
ToolLink ~ GIF+BMP+PNG Image\Texture Editor
ToolLink ~ WAV Sound Editor
ToolLink ~ Object+Route+Train Editor Guides
ToolLink ~ Object Editor Guide
ToolLink ~ Train Editor Guide; Old B4TS Format But Still Useful
ToolLink ~ Route Editor Guide; Old B4TS Format But Still Useful
ToolLink ~ Route Terrain Editor & Demo Route
ToolLink ~ Train DLL\PlugIn, OBTS Default
ToolLink ~ Train DLL\PlugIn, Steam\Diesel\Electric Selectable
ToolLink ~ Train DLL\PlugIn, Japanese Signals
ToolLink ~ Train DLL\PlugIn, British Signals
ToolLink ~ Object+Route+Train Editors
ToolLink ~ Object Editor
ToolLink ~ Object Editor
ToolLink ~ Blender PlugIn
ToolLink ~ Blender PlugIn

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