Those are not red light cameras. Likely these cameras on the stop lights are tracking traffic and volume to manage the light signal timing. Read other articles on connected signals of traffic lights.
There are several types of traffic cameras used for various purposes to monitor and enforce traffic regulations. Here are some common types of traffic cameras:
Red Light Cameras: Red light cameras are designed to capture images or videos of vehicles that enter an intersection after the traffic signal has turned red. They are typically positioned at intersections and are intended to deter red light violations and improve intersection safety.
Speed Cameras: Speed cameras are used to detect and record vehicles that exceed the posted speed limit. They can be either fixed or mobile cameras and are often placed in areas prone to speeding or areas where safety concerns are high, such as school zones or work zones.
Surveillance Cameras: Surveillance cameras are installed in various locations for general traffic monitoring and security purposes. They are typically used to observe traffic flow, monitor road conditions, and assist in law enforcement activities.
Automatic License Plate Recognition (ALPR) Cameras: ALPR cameras use optical character recognition technology to capture and read license plate numbers. These cameras are often mounted on police vehicles or stationary structures and can quickly scan multiple license plates to identify stolen vehicles, vehicles with expired registrations, or vehicles associated with other violations.
Mobile Cameras: Mobile cameras can be used for various purposes, such as monitoring speed in temporary construction zones, conducting traffic studies, or capturing violations in specific problem areas. They are typically deployed on trailers or vehicles and can be moved to different locations as needed.
Bus Lane Cameras: Bus lane cameras are specifically designed to enforce bus lane regulations. They capture images or videos of vehicles that enter restricted bus lanes, helping to ensure that only authorized vehicles, such as buses or emergency vehicles, use those lanes.
These are just a few examples of the types of traffic cameras that are commonly used. It's important to note that the specific types and applications of traffic cameras can vary between jurisdictions, as different regions may have their own regulations and systems in place to monitor and enforce traffic laws.