Security on trains and at stations will be stepped up with further mobile patrols being introduced immediately.
Transport Minister Pam Beggs today said she had asked Transperth and Westrail to look at ways to improve security in the face of thuggery on some suburban services in the past week.
However, the decision to introduce more two-man patrols now was made following a meeting between Transperth and Westrail this morning.
As well, transport authorities would meet senior police tomorrow to discuss further strategies to combat the latest bout of gang violence.
"The Government has said it will not tolerate anti-social behaviour on the public transport system," Mrs Beggs said.
"People must have confidence that they can travel safely and not be subjected to the type of behaviour that has occurred in the past week."
Mrs Beggs said the patrols would have two-way radios and cars so they could respond quickly to incidents that occurred on trains or at stations.
One of the new security teams would be based at Perth station.
"The new patrols will bring to 17 the number of security teams currently on the suburban network," Mrs Beggs said.
"They will provide a high visual presence across the network which will help reassure passengers that Transperth and Westrail are conscious of the need to ensure passengers' safety."
Mrs Beggs said the extra patrols were in addition to the presence of 120 passenger service attendants on trains.
The move also would complement the move to bring forward the installation of video cameras on trains.