GERMISTON - The United National Transport Union wants the Railway Safety Regulator and rail agency, Prasa, to be charged with attempted murder.
A train rear-ended a stationary locomotive near Germiston on Tuesday, injuring more than 200 commuters.
The union blames the crash on poor management and unsafe execution of railway protocols.
It says Prasa and the regulator acted recklessly by allowing the trains to be manually operated during signal problems.
Last week, 19 people died and hundreds were injured when a train collided with a truck in the Free State.