NSW Labor 'to bring back guardian trains'

Dedicated late-night train services with extra security will be reinstated should Labor win the NSW election.

Opposition Leader Luke Foley says the guardian service for Friday and Saturday night trains will make a comeback if he is elected premier on March 28.

The service was cancelled by the coalition government in 2014 and replaced by needs-based police patrols.

"Parents will know that particular train services at particular times can be used by their children with police security," he told reporters in Sydney's west.

"Women and other passengers concerned about safety on late-night train services will know that ... there will be that additional safety for the travelling passengers."

The cancellation of the guardian service last year was met with anger from the rail union and state Labor.

Mr Foley said the service would run from 9.30pm to as late as 2.15am across the network.

Transport Minister Gladys Berejiklian was quick to rubbish the idea, saying the government replaced the guardian service following advice from the police.

"In office, Labor put security on a handful of trains," she said.

"We have spent the last four years making every train safer with police in charge."

Mr Foley also announced that as premier he'd introduce an all-night train service from Kings Cross to Town Hall and Central on Friday and Saturday.

He said very few people used the bus service on offer and that trains would be a much more effective way of dispersing crowds leaving venues.

He added the plan was in response to the government's controversial lock-out laws which target alcohol and drug-fuelled violence.

Labor's transport spokeswoman Penny Sharpe said the Kings Cross plan is expected to cost $4 million.

The service would run both ways every 15 minutes between 1am and 5.15am with extra transit police.