This is one of the biggest impacts of having in car camera systems installed in patrol cars. Traffic stops can be high risk with reckless driving in to oncoming traffic and the actions of the occupants in a vehicle. A stop that is high-risk often means there is the chance of physical harm. Another aspect of cameras is that it can provide evidence that can be used for a prosecution. There is also the opportunity to review the video to see if any contraband or weapons were discarded from a vehicle.
Most officers will typically show an improvement in professionalism and performance when riding in a vehicle that has an installed camera. The reason for this is many officers may get complacent when they are on duty for long periods of time. Knowing a camera is recording serves is a reminder they need to be on the top of their game at all times.
The public is given peace of mind by having these cameras in the police cars. However, not all vehicles in a fleet have cameras installed. Most of the cameras are also stationary even though most citizens often believe they have an increased viewing area.
The performance and practices of an officer can be called into question based on a video review of a traffic stop. This can include complaints about courtesy and other complaints based on performance. Most of the time the actions recorded on a video camera will clear an officer of complaints that may have been unfounded. However, negative consequences can occur when complaints are verified. The installation of in-car camera systems will often increase officer exoneration.