Transportation Research Record Journal of the Transportation Research Board · 1992 · 15 citations · 0 references
EngineeringComputer ScienceSystems EngineeringComputer VisionTransportationTransportation EngineeringIntelligent Transportation SystemsTraffic EngineeringTraffic Flow AnalysisTraffic OperationsTraffic SafetyVideo AnalysisFreeway Traffic ManagementHighway Traffic FlowTraffic ManagementTraffic Management ApplicationsTraffic Management SystemsTraffic MonitoringTraffic Monitoring SystemsTraffic Speed Analysis
Recent advances in microprocessor technology have made possible the cost-effective computer processing of video images of highway traffic for measurement of traffic speed, volume, and density. Video image processing systems (VIPS) are now being considered as key components of advanced traffic management systems (ATMS). Eight commercially available or prototype VIPS were recently evaluated for effectiveness at the request of the California Department of Transportation. Test procedures were intended to duplicate conditions typically encountered on California freeway systems. A summary of the test results is reported. Most systems performed well under optimum conditions but degraded significantly under nonoptimum conditions, which varied from system to system. On the basis of the VIPS systems studied, this technology is considered feasible for specific traffic monitoring problems. Limitations and areas for further development are identified.