Western Australia will ban "sexist and demeaning" slogans from being displayed on vehicles such as the controversial Wicked campervans.
New legislation to go before parliament will allow vehicle licences to be cancelled or refused if offensive slogans are not removed.
It follows similar laws being introduced in NSW, Queensland, Tasmania and the ACT.
The McGowan government said it had received feedback from the community asking for a ban on the slogans seen on Wicked campervans.
More than 70 complaints have been upheld against the company by Ad Standards Australia.
"It's the end of the road for these tired, outdated, sexist and demeaning slogans on our vehicles," Transport Minister Rita Saffioti said on Wednesday.
"I have driven behind these sorts of vehicles with my young children in the car and I have no words to describe to them what these horrible slogans mean."
Women's Interests Minister Simone McGurk said the slogans needlessly promoted sexism, violence against women and discrimination.
"They are highly visible and send the wrong message about appropriate attitudes towards women and others," she said.
"This legislation will force vehicle owners who display offensive slogans to clean up their act, and steer the conversation in a direction that is more in line with current community standards."
