08-17-2017, 12:06 AM
Abstract
Red-light systems rely on some sophisticated technology, but conceptually they are very simple. The system includes only three essential elements:
One or more cameras
One or more triggers
A computer
In a typical system, cameras are positioned at the corners of an intersection, on poles a few yards high. The cameras point inward, so they can photograph cars driving through the intersection. Generally, a red-light system has cameras at all four corners of an intersection, to photograph cars going in different directions and get pictures from different angles. Some systems use film cameras, but most newer systems use digital cameras.
The site selection for using these cameras and what happens when the light is yellow is also indicated in this report.The disadvantages and the opration and maintainance is also included in this report.