The Wangaratta-based MP has made a submission to the Victorian Parliament's inquiry into the road toll, calling for an increase in officer training in order to increase the number of drug tests conducted.

"Not all police are trained to conduct testing, As a result if a general duties officer suspects drug use, they must then contact highway patrol," she said.

"It has been reported that there are only 600 highway patrol members able to conduct roadside drug tests and the availability of members who are trained and on shift to conduct drug tests is therefore restricted."

Ms Maxwell called on all police to have the ability to drug test drivers.

"With more capacity and greater testing, more drug drivers would be detected and removed from our roads," she said.

IN OTHER NEWS:

The Transport Accident Commission has reported that in the past five years, 41 per cent of drivers and motorcyclists who died and were tested had drugs in their system, and 25 per cent of Victorians who did use recreational drugs admitted to driving under the influence.

Speaking about her inquiry submission, Ms Maxwell said there should be immediate action to expand the rate of random drug testing.

"Consideration for the length of time illicit drugs remain in a person's system need to be considered in the length of time they are not permitted to drive," she said.

"Drugs are surpassing alcohol as a risk factor on Victoria's roads and something we need to ramp up in order to improve public safety and provide diversion opportunities for drug affected drivers."

Hearings in the inquiry continue today.