Currently available in Melbourne, Sydney and Brisbane, Gold Coast, Adelaide and Perth metropolitan areas, SUNA GPS Traffic Updates are provided continually as we monitor road conditions to bring you detailed warnings about both incidents, and traffic congestion across the metropolitan area that could affect your journey on the road. Coverage details here

We use a combination of sensors and cameras to continually monitor congestion levels across thousands of kilometres of arterial roads, freeways, and tollways. We broadcast warnings on these roads when we identify persistent and severe congestion. This information is quality controlled using GPS-equipped probe vehicles.

Additionally, we broadcast warnings about major incidents (such as accidents); road closures; major road works; severe road weather conditions, and special events expected to impact traffic.
 

Traffic displayed on a nuvi 500 with GTM 25 traffic receiver;