Victorian judges will be forced to send criminals convicted of aggravated home invasions and carjackings to prison under reforms from the Andrews Government.

The courts will be banned from using Community Correction Orders (CCO) for those offences.

And the use of "special reasons" for imposing CCOs will be restricted to five other offences, including culpable driving causing death.

Law and order initiative Community correction orders banned for aggravated home invasions and aggravated carjacking

Community correction orders banned for aggravated home invasions and aggravated carjacking $24 million for long-arm firearm training and access for 500 police

$24 million for long-arm firearm training and access for 500 police $5 million for five new mobile police units to tackle local crime

Law and order has been seen as a political weakness of the Andrews Government, and although the crime rate is dropping, Labor has come under sustained attack from the Opposition over the issue.

The ABC can also reveal that ahead of May's state budget the Government is announcing that $5 million will be spent on creating five specialised police cars fitted out with surveillance and communication systems that link to the Victoria Police Monitoring and Assessment Centre.

The mobile units could be dispatched to crime trouble spots, as well as major incidents like Bourke Street.

"We can use it out in crime hotspots where you might have a particular problem going on, protests, or in cases like Moomba," Police Minister Lisa Neville said.

She said the units would provide reassurance to the community that the police were working in the community.

The Government said the units could also be sent to sites of critical incidents or emergencies to operate as mobile command centres or other areas where an increased police presence may be needed.

An additional $24 million will also be allocated to train 500 police officers in the use of high-powered long-arm guns to tackle serious armed offenders.

Better protection for community

Last year the Government banned community correction orders from being used for criminals convicted of 11 serious offences including murder, rape and high-level drug offences.

Attorney-General Martin Pakula said a custodial sentence would be the only sentencing option for aggravated home invasion and aggravated carjacking.

Members of the Operational Response Unit will get special training in the use of high-powered weapons. ( ABC News )

"This legislation will ensure that CCOs won't be a sentencing option for some of the most serious and violent offences where the community expects prison time to be imposed,'' Mr Pakula said.

The reforms, the Government said, will also limit the "special reasons" provisions available so offenders cannot rely on the fact they were under the influence of illicit drugs at the time of offending.

The Andrews Government's second community safety statement will include the $24 million for specialist training and access to long-arm firearms.

The special weapons will be used by Operational Response Unit and in four regional area that are yet to be determined.

The types of guns are yet to be confirmed.

Ms Neville said the rollout of the weapons would better protect the community in the case of active armed shooters and lone-wolf attacks.

"We know it is much more accurate, much better able to protect the police officer and the community when you are in that high-risk terrorism incident," she said.

The changes come as the Government decided, on advice, to allow all drugs of dependence to be used at the safe injecting room drug trial in North Richmond.

Announced in 2017, the centre was originally designed to be for heroin use only because of the rapidly increasing number of deaths from the drug, particularly around Victoria St in Richmond.