Intersections in Map Maker are also referred to as “nodes.” Intersections exist for two purposes:
- To connect two linear segments where two roads meet or where a trail connects to a road.
- To separate a segment where its attributes change, such as speed, priority, or road name.
Create an intersection
If you’re creating a new road and need to change the attributes in the middle of a segment, you can draw the road in multiple edits and create as many breaks as necessary.
If a road already exists and you need to add intersection nodes to change attributes where there is no intersecting road, you need to create an intersection:
- Zoom-in to the segment you want to create an intersection.
- Right-click on the map and select Find near this point from the drop-down.
- Select the segment where you want to create an intersection.
- Click Edit and then select Split the segment from the drop-down.
- Drop the marker to the point you want to create an intersection.
- Click Done, once you're sure of the split point.
Edit an intersection
To edit an intersection directly, select the intersection and choose Edit this intersection from the “Edit” menu. You can expand the “Options” panel on the upper right side of the viewport to toggle between normal and elastic mode. Elastic and normal mode changes how moving the intersection affects the connected roads.
Normal mode allows you to move the intersection location independent of the connecting roads. In the image below, an intersection of two roads has been dragged southeast in normal mode. The shape of both roads is changed up to the next alignment point, but the overall position of the roads is retained up to the next intersection node. This mode is useful for correcting intersection placement when road alignment is mostly correct.
Elastic mode moves the connecting roads with the intersection. The image below shows the result of dragging an intersection in elastic mode. The position of both roads has been modified up to the next intersection node to accommodate the intersection position change. This mode is useful for correcting alignment when an entire segment is misaligned with satellite imagery.
Delete an intersection
You can also delete an intersection or report a problem about the intersection. In general, however, it’s best not to delete intersections - an intersection node may exist to facilitate changes in segment attributes, so stray intersections should be kept.
Some intersections are shaped like stars with multiple curved, crossing roads and ramps. Map these complex intersections like a hash (#), using straight lines that create boxes. Don’t map the intersection like how it looks in satellite imagery.Click to see an example: