Tinted and reflective plate covers are readily available online, but legal experts are warning that fitting one could leave Australian drivers on the wrong side of the law if it obscures their number plate.

Principal Lawyer at Astor Legal in Sydney, Avinash Singh, explains when tinted number plate covers become illegal, the penalties drivers could face for using them, and why claiming ignorance is unlikely to be a defence.

According to Avinash, “Tinted or reflective number plate covers are not automatically illegal, but they become unlawful if they obscure the plate or make it difficult to read.”

“The exact requirements vary between states, but in most jurisdictions, number plates must remain clearly visible and legible from up to 20 metres away, including New South Wales, Victoria and Queensland.”

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So what happens if someone installs a tinted cover to avoid speed cameras or tolls? According to Avinash, the consequences can extend well beyond a standard traffic infringement.

“If police can prove a driver deliberately modified their number plate to avoid detection by speed cameras or toll roads, they could potentially face the criminal offence of perverting the course of justice,” he said. “That offence carries a maximum penalty of 14 years’ imprisonment.”

How difficult is it for the police to prove that intent? According to Avinash, investigators would need evidence showing the driver deliberately installed the cover to evade detection. 

“The strongest evidence would typically be statements made by the driver, or written communications such as text messages or emails indicating the purpose of modifying the number plate was to avoid being identified.”

Although tinted number plate covers remain widely available for purchase online, Avinash says responsibility ultimately rests with the driver.

“That these products are sold does not make them legal to use. These offences are generally ones of absolute liability, meaning a driver cannot rely on not knowing the law as a defence. The responsibility remains with motorists to ensure their number plates are clearly visible and comply with the requirements in their state.”