Police are examining two incidents captured on the cameras
Parking officers in Leeds have been issued with shoulder-mounted cameras in an effort to make their job safer.
Leeds City Council said 10 cameras were being used in areas with the highest number of incidents of staff being subjected to violence or intimidation.
The devices, which were introduced two months ago, can be switched on when an officer feels under threat.
The council said there had been a 48% reduction in incidents compared with the same two-month period in 2009.
The move comes after there were 172 recorded incidents of violence or intimidation towards officers last year.
The council said footage from the cameras in two incidents had been handed to police.
Councillor James Monaghan, the council's executive board member for environmental enforcement, said: "The council considers the safety of its staff incredibly important and this is a device to help them feel more secure.
"These cameras are a last resort for problem areas in the city but I think they send out a strong message that physical abuse of our staff is unacceptable."