A main thoroughfare leading into the state's north has been fitted with WA's first regional fixed speed camera.

The Indian Ocean Drive camera in Gabbadah, 90 kilometres north of Perth, is, according to WA Police's website, the sixth fixed speed camera to be installed in WA.

A spokeswoman for the Road Safety Commission said the new camera was part of the state government's plan to expand its fixed and red-light speed camera fleet.

"Details of those cameras will be released before they become operational," she said.