There are a number of traffic cameras in the modern day transport system. Traffic density and traffic patterns are the major reasons why most of these traffic cameras are made even though there could be a whole lot of other reasons some are made to see done. There are some places that are known to have a lot of infractions with time and this are the most common places where these cameras are known to be placed. Roads or basically places with terrible congestions, hazards leading from weather and complex insertions are known to be fitted with traffic cameras. Besides being fitted with internet connectivity they are known to be fitted on poles of about thirty feet tall.
In more developed countries you will find the red light traffic camera fitted in the roads especially where drivers are supposed to drive at a lower speed due to a number of stipulated reasons. These cameras are made with the specific reason of ensuring that law breakers in terms of traffic no longer do that. The traffic camera will pick on any driver that tries to get through an intersection while the red light is on by taking his/her photo or just the number plate off the car involved. To find a match the relevant picture will be sent to the necessary computer system. Charges will then be made as the authority is being alerted of the atrocity if at all there is a match of the driver or the owner of the car.
Due to the small size of the cameras there is no way the driver could ever be able to know that a particular intersection there is a camera actually watching over him/her. There is a possibility of the camera being just below the red light of even inside it. To avoid the fact that the driver could see it they could be placed in different things not easy to notice. Differently from those that are placed even on opposite buildings or bush some cameras are placed where the driver can clearly see so that they just have to follow the laws as they are.
In most traffic systems you will note that they work based on video loop triggers. In this system a camera will be placed on the traffic light recording all the happenings on the road all in live video and then send them to the necessary system operation persons while they happen. When a vehicle goes through the intersection in question while the red light is still on then they are bound to face the authority which will receive the information and act on it with immediate effects.
There are also punitive cameras that are used in some parts of the world. This is made to serve the motorist industry while they go through intersections in roads as then and only then can they not break the traffic rules.