AutoCAD® Civil 3D® 2011 Transportation Extension Readme

Thank you for downloading AutoCAD® Civil 3D® 2011 Transportation Extension

This readme contains the latest information regarding the installation and use of this extension. It is strongly recommended that you read this entire document before you apply this extension to your product. For reference, you should save this document to your hard drive or print a copy.



You can apply this extension to the following Autodesk products running on all supported operating systems and languages. Be sure to install the correct extension for your software.

32-bit Product
AutoCAD Civil 3D 2011 x86 English C3D_Trans_2011_x86.exe

64-bit Product
AutoCAD Civil 3D 2011 x64 English C3D_Trans_2011_x64.exe


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You can use this extension with the following operating systems below.

Service Pack 2 (SP2) and Service Pack 3 (SP3) of the following:

Service Pack 1 (SP1) and Service Pack 2 (SP2) of the following:

The following Windows® 7 operating systems:

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When you apply this extension while running AutoCAD Civil 3D 2011, it is recommended that you do not click the "Automatically close applications and attempt to restart them after setup is complete" option. Instead, close AutoCAD Civil 3D 2011 manually, and press "Ignore" at the prompt. It is also recommended that you reboot your system after installing the extension.

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As you prepare to install this extension, keep the following in mind:

Back Up Custom Files

It is recommended that you back up all custom CUI, MNR, and MNL files before you apply this extension.

Administrative Privileges

During installation, you will be prompted for the original installation media or a network image. In order to apply this extension, you must have administrative privileges to install and uninstall products.


After you install, it is recommended to reboot your system even if not prompted.

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Follow these instructions to install this extension.

  1. Download the extension and save it to any folder.
  2. If required, insert the product media (for example, the AutoCAD Civil 3D installation disc).
  3. Find the folder where you saved the extension and double-click the executable (EXE) file.

Important: You cannot run an automatic uninstall to remove this extension. To restore your version of AutoCAD Civil 3D 2011 to its original state, uninstall AutoCAD Civil 3D 2011 and reinstall it.

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Copyright ©2011 Autodesk, Inc.