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Crash Query - Line Tool Overview

Written by Lauren Miller

The Line Tool lets Crash Query users select a roadway section by selecting the road on a map and defining the beginning/ending boundaries of the desired section.

Once defined, the selected roadway section is added as a filter to the query.

How to Use the Line Tool


1. Zoom to the desired section of roadway on the crash map.

2. Click the Line Tool icon from the map toolbar.
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With the Line Tool selected, all available roadways will display on the map. The crash map will display more roadways as you continue to zoom in. If you cannot see the roadway you want to select, keep zooming in until the roadway line appears.

The roadways displayed on the map represent each agency's Linear Referencing System (LRS). The map displays only roadways contained within the LRS.

3. Once you identify the roadway you want to select, click the roadway to define the first boundary of your filter area (either the beginning or ending boundary).

Note: If Auto-zoom is enabled, your map may automatically zoom in or out to display the entirety of the selected roadway.

If it is difficult to click the beginning/ending milepoint because crash locations are displayed on the map, you can hide the crash locations by clicking the “Hide Crashes” icon (the eye-shaped icon) in the crash total box at the top of the crash map.

(Hide Crashes in Crash Query)

4. With the first boundary set, click to place the second boundary on the roadway.

5. The route filter, showing the precise beginning and ending milepoints of the selected roadway section, will now appear in the filter bar.
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How to Edit Line Tool Selections

To modify the selection boundaries, edit the values in the filter bar or edit the boundary line directly on the map.

To edit the values in the filter bar:

Click the beginning or ending milepoint value and type in the new value.

To edit the boundary line on the map:

  1. Click the boundary line to enter edit mode.

  2. Click the point you want to move.

  3. Click the new location on the selected line to save the updated point.

Note: You can use the Line Tool to filter more than one roadway section in the same query. Repeat the process above for each additional section you want to add.

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