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Lane Width Tool

Adjust lane widths along road

Description

The Lane Width Tool is used to adjust lane widths at any location along a road. The width of individual lanes can be varied across the entire lane or more locally at specified locations. Width values are stored on lane width markers, which can be positioned independently along lanes. The width of the lane on the sections between markers is interpolated from the marker widths.

All lanes will automatically have lane width markers at the beginning and end of the lane.

When the Lane Width Tool is selected and a road is highlighted, all the lane width markers for the road will be displayed.

Note

The Lane Width Tool does not allow adjustments to the center lane. To adjust the center lane, use the Lane Offset Tool.

Open the Lane Width Tool

On the RoadRunner toolbar, click the Lane Width Tool button:

Lane Width Tool button

Examples

Create a New Lane Width Marker

  1. Click the Lane Width Tool button.

  2. Click the road you want to edit.

  3. Move the pointer over the lane where you want to insert the marker. A light blue line appears, indicating where the marker will be inserted.

  4. Right-click to add a new width marker.

  5. Optionally, press the right-click button and drag to adjust the marker. If you initially right-click near the lane boundary, you can drag the lane width at the marker. If you initially right-click near the inside of the lane, you can drag the position of the width marker.

Adjust the Width at a Marker

  1. Click the Lane Width Tool button.

  2. Click the road you want to edit. The lane width markers will be displayed on the picked road.

  3. Click and drag the point on the outer boundary of the width marker you want to edit.

  4. Optionally, once the width marker is selected, you can type the desired width directly into the Width slider in the Attributes pane.

Adjust the Width of a Lane Section Between Two Markers

  1. Click the Lane Width Tool button.

  2. Click the road you want to edit. The lane width markers and lane boundary lines are displayed for the selected road.

  3. Click and drag the lane border curve to move it in or out. The action automatically adjusts the markers at the start and end of the section.

  4. Optionally, once the lane section is picked, you can type the desired width directly into the Width slider in the Attributes pane to set the width at the start and end of the lane section.

Adjust the Angle at a Marker

  1. Click the Lane Width Tool button.

  2. Click the road you want to edit. The lane width markers are displayed on the selected road.

  3. Click a lane width marker. Two new angle points are displayed.

  4. Click and drag an angle point to adjust the slope.

  5. Optionally, once the angle point is picked, you can type the desired slope value directly into the Slope slider in the Attributes pane.

Create Sharp Angles

By default, the slope on either side of a lane width marker is kept continuous. You can create sharp angles by disconnecting the slopes as follows:

  1. Click the Lane Width Tool button.

  2. Click the road you want to edit. The lane width markers are displayed on the selected road.

  3. Click a lane width marker. Two new angle points are displayed.

  4. Click the Disconnect Tangents button. The angle points are no longer kept continuous, and you can control the slopes on either side independently.

Tip

When you click Disconnect Tangents, the slopes are always set to point at the next or previous width marker, even if the slopes are already disconnected.

Remove Sharp Angles

To convert a sharp angle into a smooth angle at a lane width marker, connect the slopes as follows:

  1. Click the Lane Width Tool button.

  2. Click the road you want to edit. The lane width markers are displayed on the selected road.

  3. Click a lane width marker. Two new angle points are displayed.

  4. Click the Connect Tangents button. The angle points are now kept continuous.

Move a Width Marker

  1. Click the Lane Width Tool button.

  2. Click the road you want to edit. The lane width markers are displayed on the selected road.

  3. Click and drag near the middle of the line of the width marker that you want to move.

Move the End of a Lane

  1. Click the Lane Width Tool button.

  2. Click the road you want to edit. The lane width markers will be displayed on the selected road.

  3. Click and drag the horizontal tick at the end of the lane.

    Note

    It can be difficult to select the horizontal tick because the UI favors selecting the width point at the same location. Rather than clicking directly on the tick, move the pointer to the side of the tick until the tick is highlighted in yellow.

Delete a Width Marker

  1. Click the Lane Width Tool button.

  2. Click the road you want to edit. The lane width markers and lane boundary lines are displayed on the selected road.

  3. Press the Delete key or select Edit > Delete from the menu bar.

    Note

    You cannot delete the markers at the start or end of the entire lane.

More About

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Introduced in R2020a