Data collection is a fundamental requirement of providing high quality travel information to drivers. ANPR Cameras (Automatic Number Plate Recognition) record the Vehicle Registration Numbers (VRN) of passing traffic. These are then encrypted at a computer outstation and stored alongside the related time stamp and camera location. By matching the encrypted VRN between camera locations, a journey time can be derived between those two ANPR locations. This information is then collated by the Traffic Scotland Control Centre, and will be used in the future to inform drivers using Variable Message Signs (VMS). The data collected is retained for a limited time before being overwritten. The retention time is typically no greater than one hour as this allows adequate time for journey times to be calculated between sites. Care is taken to ensure this process is fully compliant with the Data Protection Act.