Montreal police are now in phase two of their body camera pilot project.
Over the next several weeks about 40 officers from three different stations will be equipped with them.
Thirty officers in the metro division and who deal with vehicle traffic are already using them.
Research about body cameras is providing they can have a variety of effects.
A study published this month by the University of Cambridge shows that officers wearing cameras are the subject of far fewer complaints.
Meanwhile researchers at the same university found earlier this year that officers wearing cameras are more likely to report being assaulted -- possibly because the police officers determined when they were turned on, or because officers .were more confident in making reports with video evidence.
