Auckland's Mayor admits there's no way to guarantee the safety of passengers on public transport. 

Figures released exclusively to Newstalk ZB show Auckland Transport is dealing with about 83 incidents a week on trains, and an increasing number of those incidents are violent. 

Emergency services are being called to incidents on buses nine times a week, including stabbings, beatings, and other attacks. 

Wayne Brown told Mike Hosking he's asking Police to hop on buses during their regular patrols, but there can't be cops and security on every bus. 

He says they've set aside money to start caging drivers to protect them, but they can't cage passengers. 

LISTEN ABOVE