In Australia, what does a red P plate displayed on a car identify?

In Australia, a red P plate displayed on a car identifies a provisional driver.

The plate is part of Australia’s graduated licensing system. After completing the learner stage, a newly licensed driver generally enters a provisional period during which extra conditions apply. The red P plate is commonly associated with the first provisional stage, often called a P1 licence, although the exact rules and plate designs are set by each state or territory.

Provisional drivers may face restrictions that do not apply to fully licensed motorists. Depending on the jurisdiction, these can include passenger limits, night-driving conditions, alcohol requirements, mobile-phone rules, and lower demerit thresholds. The plate lets police and other road users identify the driver’s licensing status.

Australia also uses a green P plate in many jurisdictions for a later provisional stage. Because licensing is not administered through one uniform national code, the precise restrictions, display rules, and transition dates vary between states and territories. The shared meaning of the red plate is the important national-level fact: it marks a provisional driver.