The WA Liberal Party has promised to offer free public transport to carers if it wins the state election.
The Disability Services Minister, Helen Morton, says the plan would allow travel on all metropolitan buses, trains and ferries during non-peak periods, at a cost of $1.2 million to taxpayers over four years.
She says more than 8,500 carers would benefit from the pledge.
"They sometimes have to give up careers, they often sell businesses," she said.
"The carers' SmartRider is a small way of us acknowledging and recognising and appreciating that fantastic role that they perform."