Dozens of people have been caught breaking road rules in a four-day police crackdown.
Officers from Dorset Police sat in an unmarked lorry cab while it was driven around Bournemouth between 19 and 22 August.
The vehicle offered an "ideal viewing platform" because of its height, the force said.
A total of 120 offences were recorded, including drivers using mobile phones at the wheel, and not wearing seatbelts.
The campaign, named Operation Tramline and funded by National Highways, saw trained officers use a video camera to record evidence from the lorry cab.