This guide explains how to turn map layers on and off in the National Network Map. It helps road managers view extra safety and reference information, such as rail crossings and height clearances. It also highlights that some layers are automatically applied for safety reasons.

A web browser with internet access.

Access to the National Network Map.

A basic understanding of which additional map information (for example rail crossings or construction) you need to see.

Date of last review: [19 02 2026]

1. Open the National Network Map and select a network or area of interest so you can see the base network on the map.

2. Locate the layers drawer on the map interface (bottom left-hand corner).

3. Open the layers drawer to view the list of available layers. These represent additional sources of information that can be shown on top of the network.

4. Review the list for layers relevant to your task, such as:

a) Rail crossing information.

b) Height clearance information.

c) Construction (planned or unplanned).

d) State and Local Government Area (LGA) boundary layers.

5. Turn a layer on by selecting it in the layers drawer. The map will update to show that information on top of the network.

6. Turn a layer off by deselecting it in the layers drawer if you no longer need that information.

7. To view swept path information and safety zones carried over from legacy jurisdictional maps, turn on the relevant layers in the same layers drawer.

8. Continue adjusting layers until the map shows the combination of safety and reference information you need for your assessment.

Some layers are automatically applied to the map based on safety requirements; be cautious when turning these off, as doing so may hide important safety information.

If the map looks cluttered, turn off non-essential layers so that critical information, such as height clearances and rail crossings, remains easy to see.

If you cannot see a feature you expect (for example, a rail crossing), check whether the corresponding layer is turned on.

Remember that the layers drawer is updated over time as more information is added to the map; new layers may become available in future.

Check your organisation’s internal guidance on which layers to use when assessing heavy vehicle access and safety.

Contact the NHVR Spatial or Network Management support team if layers appear to be missing or not displaying correctly.

Use the Feedback or Help options in the National Network Map to report missing or incorrect layer information.