Delegates at last week's conference in Albury passed a motion put by the Bangalow branch of the CWA of NSW to have vehicles bearing slogans promoting sexism, racism and violence banned from Australian roads.

"If we are serious about treating women, and indeed everyone, with respect, and are serious about creating a community free of violence, sexism and racism, we need to vigorously campaign to have the NSW Government pass laws which ban this offensive advertising on vehicles," Bangalow branch president Di Campbell said.

Members are particularly concerned about the types of slogans on campers hired out by Wicked Campers.

The company that has come under fire in recent years for the "offensive" messages on some of its vehicles which has been the catalyst for Queensland, the ACT and Tasmania to pass legislation allowing vehicles to be deregistered if the Advertising Standards Bureau upholds complaints about offensive messaging.

CWA of NSW State President Stephanie Stanhope said they would like to see similar legislation passed in NSW but would also welcome action at the federal level to bring about a uniform approach to the issue.

"It's time every state took a stand on these unacceptable slogans and organisations like ours supported the changes necessary to eliminate this kind of disrespect from our communities," she said.

"When statements and slogans degrade people and cause an enormous amount of offence, then it's time to act.

"Anyone can see and read these slogans as the vehicles are right in front of people on the roads, parked in the street and beside families in the camp ground.

"Parents driving with children are confronted with questions about what the words and messages mean. These slogans are way out of step with community standards."