London Underground has announced a new 'buddy system' if we're lone working on stations.
Every two hours, you're supposed to phone your mate at the next station to check they're alright.
But what use is a phone call two hours after you've been assaulted?
The buddy system has previously only been used on nights when there are no passengers - it can't keep us safe during the day.
On the east end of the District Line, RMT wants to ballot for industrial action about lone working. It is also tackling the root cause of lone working by fighting for more staff.