Red Light Cameras

Wikipedia

A traffic enforcement camera is a system, including a camera and a vehicle-monitoring device, used to detect and identify vehicles disobeying a speed limit or some other road legal requirement. Examples include:

* Speed cameras for identifying vehicles traveling over the legal speed limit.
** Many such devices use radar to measure a vehicles instantaneous speed.
** Sets of multiple cameras with number-plate recognition software which can check the average speed of a vehicle between two points.
* Red light cameras to detect vehicles which cross a stop-line or designated stopping place after a red traffic light shows.
* Bus lane cameras for identifying vehicles traveling in lanes reserved for buses. In some jurisdictions, bus lanes can also be used by taxis and/or vehicles engaged in car pooling.
* Toll-booth cameras for identifying vehicles proceeding through a toll booth without paying the toll.
* Level crossing cameras for identifying vehicles crossing railways at grade illegally.
* Congestion charge cameras for recording vehicles inside the chargeable area.
* Double solid line cameras for identifying vehicles crossing these lines.
* High-occupancy vehicle lane cameras for identifying vehicles violating the occupancy requirements.
* Turn cameras at intersections where specific turns are prohibited on red. This type of camera is mostly used in cities or heavy populated areas.
* Parking Cameras which issue citations to vehicles which are illegally parked or which were not moved from a street at posted times
There are systems that are combinations of the above; for example, some systems detect both red-light and speed infringements.

Existing traffic cameras, as well as special purpose ANPR cameras, can also be used for non-traffic-enforcement related activities, notably for mass surveillance of motorists by government agencies. "misuse">

History

The concept of the speed camera can be dated back to at read more at » http://en.wikipedia.org/wiki/Traffic+enforcement+camera