00625680

Component

http://onlinepubs.trb.org...trr/1992/1360/1360-008.pdf

https://scholar.google.co...Taff&publication_year=1992

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.

This paper appears in Transportation Research Record No. 1360, Traffic Operations. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01405038

English

p. 46-49

1992

Transportation Research Record

0309052238

Figures (1) ; References (6) ; Tables (2)

Development; Feasibility analysis; Freeways; Highway traffic control; Image processing; Intelligent transportation systems; Measurement; Performance evaluations; Prototypes; Research; Test procedures; Traffic density; Traffic speed; Traffic surveillance; Traffic volume

Research and development

California

California

Bridges and other structures; Highways; Operations and Traffic Management; Research; I73: Traffic Control

TRIS, TRB

Jan 5 1993 12:00AM

• CALTRANS-CAL POLY TRAFFIC OPERATIONS CENTER SIMULATOR (ABRIDGMENT)
• COMPARATIVE EVALUATION OF ALTERNATIVE TRAFFIC CONTROL STRATEGIES
• COMPARATIVE PERFORMANCE EVALUATION OF INCIDENT DETECTION ALGORITHMS
• COMPROMISE APPROACH TO OPTIMIZE TRAFFIC SIGNAL COORDINATION PROBLEMS DURING UNSATURATED CONDITIONS
• CONTROL EMULATION METHOD FOR EVALUATING AND IMPROVING TRAFFIC-RESPONSIVE RAMP METERING STRATEGIES (ABRIDGMENT)
• COST-EFFECTIVENESS ANALYSIS FOR SIGNALIZED INTERSECTION IMPROVEMENTS
• DETECTOR DELAY FOR RIGHT TURN ON RED
• EVALUATION OF INFORM: LESSONS LEARNED AND APPLICATION TO OTHER SYSTEMS
• EXAMINATION OF INDICATORS OF CONGESTION LEVEL
• FREEVU: A COMPUTERIZED FREEWAY TRAFFIC ANALYSIS TOOL
• HIERARCHICAL FRAMEWORK FOR REAL-TIME TRAFFIC CONTROL
• HISTORY AND INSTITUTIONAL ARRANGEMENTS OF SELECTED HIGH-OCCUPANCY VEHICLE PROJECTS
• INTERNATIONAL HIGH-OCCUPANCY VEHICLE FACILITIES
• MAKING INTELLIGENT VEHICLE/HIGHWAY SYSTEMS REALLY WORK: A STATUS REPORT ON THE CONGESTION AVOIDANCE AND REDUCTION FOR AUTOS AND TRUCKS PROJECT
• NEW COMPUTERIZED TRAFFIC SIGNAL SYSTEM DESIGN
• PRIORITIZING SIGNALIZED INTERSECTION OPERATIONAL DEFICIENCIES
• PROGRESSION-BASED OPTIMIZATION MODEL IN TRANSYT-7F
• RECAPTURING CAPACITY BY REMOVING FREEWAY BOTTLENECKS (ABRIDGMENT)
• REGIONAL ARTERIAL (SUPER STREET) CONCEPTS
• ROLE OF HIGH-OCCUPANCY VEHICLE FACILITIES IN A MULTIMODAL TRANSPORTATION SYSTEM
• TRAFFIC MANAGEMENT DURING THE I-195 PROVIDENCE RIVER BRIDGE REPAIR PROJECT (ABRIDGMENT)
• TRANSYT-7F: ENHANCEMENT FOR FUEL CONSUMPTION, POLLUTION EMISSIONS, AND USER COSTS