Fines for drivers going less than 10km/h over the limit have tripled

Fines issued to Victorian motorists caught speeding by as little as 3km/h have tripled in five years.

Almost 4.63 million drivers have been busted for speeding by less than 10km/h over the five-year period to 2014, with an average of 2500 tickets written by officers every day, the Herald Sun reports.

Fines from fixed and mobile speed cameras have declined over the same period.

The record figures have drawn the ire of critics, who say the deployment of officers to police minor breaches is simply revenue raising and ignores serious crime.

The revelation comes as Victoria Police refuses to make public the details of a secret research report about its officers' attitudes to low-level speeding.

The external review, estimated to have set the force back more than $10,000, is understood to contain the recommendations of consultants based on interviews with police staff.

According to the figures obtained by News Corp, 11,129 drivers were clocked speeding using radar guns in 2009-10, compared to 37,700 in 2013-14.

However, the number of people caught by mobile or fixed speed cameras dove from 906,734 in 2009-10 to 864,000 in 2013-14.

Now with 400 radar guns on Victorian roads, 300 more than in 2010, RACV road traffic manager David Jones says police should return their focus to other road menaces.

"There are more serious issues around drink and drunk driving and high-level speeds rather than trying to get people who are slightly going over the limit and then fining them," Mr Jones said.

Low-level speeding fines generally claim one demerit point and a $189 charge.

Revenue from the handheld police devices is tipped to reach $162.2 million this year, a $2.7 million jump from last year.