Victoria's police union says officers should be better equipped to stop deadly car attacks.

In the same week that James Gargasoulas was found guilty of murdering six pedestrians and injuring another 27 after careening along a footpath in Melbourne's CBD last year.

The Police Association of Victoria says police are currently unable to prevent it happening again.

“We think more should have been done by now,” union secretary Wayne Gatt has told the ABC.

“We are unaware of any changes that have been made to pick up on some of the deficiencies.

“We have to accept that vehicle-borne attacks and vehicle-borne pursuits are going to occur… so we need plans and strategies to identify which ones of them must be stopped.

“We do need to have plans and we need to communicate it well down into the ranks where people are going to be tasked with the job of implementing those decisions on the frontline.

“[Planning] is thin when it comes to pursuits that simply need to be stopped, and in those cases we are asking for more detail and more direction and more clarity.”

The union wants all pursuits to be overseen from a central command centre, and for police cars to carry “stop sticks” that can deflate tyres and slow cars.

It has also proposed giving officers new high-tech options to immobilise cars.

Victoria Police has issued a statement saying: “In order to protect the integrity and confidentiality of the Victoria Police pursuit policy, we do not proactively discuss its details. Our reasons include protecting operational methodology and police safety”.

The Premier said Melbourne’s defences have been strengthened.

“There is a very big program of work that has gone on in relation to trying to fortify points of weakness,” Premier Daniel Andrews said.