Export Road Files (.crd, .dc, or .rxl) from Corridors

Export road files from corridors in your project (including alignment, station, slope, and offset data, as applicable) using any of the following road file exporters available on the Corridor tab in the Export command pane:

  • DC file (corridor alignment and templates)
  • GENIO road
  • RXL alignment

Note: Before exporting corridor data, it is recommended that you set the maximum sampling distance for your corridor to less than 5m. Setting the maximum distance to less than 5m ensures higher accuracy in your export file. To set the maximum sampling distance, select Project Settings > Computations > Corridor.

To export a road file from a corridor:

Note: For general instructions on exporting data files, see Export Data.

  1. Select Export in Home > Data Exchange.

    The Export command pane displays.

  1. Select the Corridor tab.

    A list of available corridor exporters displays.

  2. Select the appropriate format option to export road files from corridors:
    • DC file (corridor alignment and templates)
    • GENIO road
    • RXL alignment
  3. Complete the following fields as applicable (depending on the selected exporter). Then click Export.

Data (as applicable, depending on selected exporter)

Road name

This field is read-only. The name of the corridor is used for the road name.

Corridor surface

Select the corridor surface to be used for the road file.

Horizontal alignment/Vertical alignment

These fields are read-only. The alignments specified for the selected corridor are displayed.

Begin station/End station

Enter the station IDs that specify the horizontal beginning and ending points for the exported road. If the road includes a vertical alignment, the stations must be within the range where the horizontal and vertical alignments overlap.

Left side slope/Right side slope

If the first template in the selected corridor includes side slope nodes, they are automatically selected. Otherwise, select the template node names that identify the left and right side slope for the first template.

Note: To export side slope data correctly, ensure the following prior to export:
- The side slope instructions have their existing ground set to a valid surface. (The corridor surface visibly connects to the existing ground surface when this is done correctly.)
- Each of the two side slope instructions have unique names, such as "Side_L" and "Side_R".

File name

File name

Optionally change the file name, which, by default, is the same as the project name.

Optionally, do either of the following:

  • Click the Browse button and change the location for the file. The default location is the project folder.
  • Click the Save File Remotely button to save the file to a remote location such as Trimble Connect.

Settings (as applicable, depending on selected exporter)

Template generate method

Select one of the following options:

  • Custom interval - Select to generate cross-section templates based on cross-section samples taken at specified intervals along the horizontal alignment.
  • Corridor interval- Select to generate cross-section templates based on the maximum sampling distance specified in Project Settings > Computations > Corridor. If the maximum sampling distance specified for any template within the corridor is smaller than the maximum distance specified in Project Settings, that distance is used instead along the entire corridor.

Custom interval

If you selected Custom interval for the Template generate method, enter the distance to apply between each cross-section template.

Tolerance to prevent redundant templates

Enter a value for the tolerance to be used to help determine which cross-section samples will be not be used to create cross-section templates.

If a sample falls within this tolerance based on samples preceding and following it, no cross-section template is created for that sample. By preventing the creation of unnecessary redundant cross-section templates, the size of the road file can be greatly reduced.

For more information, see Notes on Cross-Section Templates.

Horizontal alignment station interval

Enter the station interval for the horizontal alignment when drawn on the field device.

Related topics

Export Data

Notes on Cross-Section Templates

Understanding Corridors