The system recorded 812 drivers distracted by using mobile phones behind the wheel, and 2,393 incidents of seat belt non-compliance.
In several cases the cameras, which use a combination of artificial intelligence (AI) and human reviewers to detect offences, also found adult and child passengers not being securely fastened in their seats, or not wearing seat belts at all.
Dame Sarah Storey, active travel commissioner for Greater Manchester, said: “The results of the trial show the horrifying truth behind the number of drivers who still don’t consider how their behaviour behind the wheel of their vehicle can affect themselves, their passengers and other people using the roads.