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Fixed cameras

The cameras in the bright yellow housings use radar to detect the speed of vehicles. The camera is activated when a vehicle crosses the radar beam at excessive speed. It takes two photographs of the rear of the vehicle at an interval of 0.5 seconds. A speed will be recorded on the film. However in order to safeguard the motorist against a faulty or false camera reading, a secondary check is undertaken manually. The white lines painted on the road surface provide an independent way of verifying the speed reading, simply by looking at how many white lines have been crossed during the 0.5 second interval. This simple formula enables us to work out how fast the car was travelling.
 
Mobile cameras

These use laser technology to detect the speed of travelling vehicles. When the camera is triggered by the operator it emits a rapid stream of laser beams that reflect off the vehicle and record its speed. The laser technology is very efficient. However in order to ensure complete security, all cameras undertake a self-checking procedure. Furthermore the operator carries out an alignment and distance check.

Red Light cameras

These cameras are able to detect motorists that travel through traffic lights AFTER they have turned red. The cameras are directly linked to loops embedded in the road surface that detect vehicle movement. If a vehicle crosses the solid white line on a red light, the cameras will automatically take two photographs. This is to prove that the vehicle has carried on going and not just crossed the line too late. The photographs record the time, date and details of the offending vehicle and will show the time the lights were on amber and when it turned to red. The camera can cover up to two lanes of traffic and can clearly distinguish if one or both lanes activated the system.