Within some states, the cameras may only be permitted in certain areas.
For example, in New York State, the Vehicle and Traffic Law permits red light cameras only within cities with a population above 1 million (i.e.
The first photo shows the vehicle just before it enters the intersection, with the light showing red, and the second photo, taken a second or two later, shows the vehicle when it is in the intersection.
Details that may be recorded by the camera system (and later presented to the vehicle owner) include: the date and time, the location, the vehicle speed, and the amount of time elapsed since the light turned red and the vehicle passed into the intersection.
A red light camera (short for red light running camera) is a type of traffic enforcement camera that captures an image of a vehicle which has entered an intersection in spite of the traffic signal indicating red (during the red phase).
Generally the camera is triggered when a vehicle enters the intersection (passes the stop-bar) after the traffic signal has turned red.
New Jersey has the strictest yellow timing provisions in the country as a result of concerns that cameras would be used to generate revenue; they have a statute specifying that the yellow time for an intersection that has a red light camera must be based on the speed at which 85% of the road's traffic moves rather than be based on the road's actual speed limit.If a proper identification cannot be made, instead of a ticket, some police departments send out a notice of violation to the owner of the vehicle, requesting identifying information so that a ticket may be issued later.There is debate and ongoing research about the use of red light cameras.In some areas, the length of the yellow phase has been increased to provide a longer warning to accompany the red-light-running-camera.There is also concern that the international standard formula used for setting the length of the yellow phase ignores the laws of physics, which may cause drivers to inadvertently run the red phase.
There, the information is typically reviewed by a law enforcement official or police department clerk, Studies have shown that 38% of violations occur within 0.25 seconds of the light turning red and 79% within one second.