In the Netherlands speed enforcement is the most important task of the motorway police. At the moment still executed with the aid of radar and "wet film" techniques using the methodology of point measurement. After some first trials using handheld computers and "real" policemen a pilot started on the A-2 motorway between Utrecht and Amsterdam at the end of 1997, using digital image processing, combined with trajectory control and fully automated processing. The cameras cover 3 lanes over a length of 3 km and are cross referenced. The pilot was put in operation after first having jurisprudence on this new technology and methodology and so far the results have proven that the technology works in a reliable manner; also effects on traffic behaviour and speed harmonisation are clearly visible. At the processing end a considerable reduction of throughput time and workload for staff has been achieved. For the covering abstract see IRRD E102946.
Abstract