Average Speed Cameras


Average Speed Cameras use “time over distance” technology to monitor the speed of passing vehicles.

Lane-specific cameras utilising Automatic Number Plate Recognition (ANPR) software capture and record details of a passing vehicle’s license plate. As the vehicle travels along the carriageway it then reaches a second set of cameras at which time its license plate details are captured and recorded for a second time. Both the entry and exit information is sent to a central computer where the data from the two readings is matched and analysed. By using the data from this analysis it is possible to measure a vehicle’s average speed by examining the time taken to travel a known distance. When the system calculates a speed that is above the desired threshold a violation file will be created.

Within the violation file all the images and data collected by the camera system relating to that particular offending vehicle are collated. This violation data is then remotely transferred for back office processing, where violation notices can be created.

All data is encrypted to ensure it is unrecognisable to an unauthorised observer, allowing for total security and ensuring complete evidential integrity.

By using multi point to multi point technology, Average Speed Cameras are capable of offering accurate speed measurements even if a vehicle changes lane or leaves the particular carriageway being monitored, reducing potential incidents caused by vehicles changing lane in order to avoid detection and in turn ensuring maximum possible offence detection.

Method of detection

The Vysionics SPECS system uses video analytics to detect number plates and RedSpeed RedFusion™ uses laser to detect the presence of a vehicle.