00803820

Component

https://doi.org/10.3141/1727-16

http://scholar.google.com...mith&publication_year=2000

Automated monitoring of traffic conditions in traffic management systems is of increasing importance as the sizes and complexities of these systems expand. Accurate monitoring of traffic conditions is dependent on accurate input data, yet techniques that can be used to screen data and remove erroneous records are not used in many traffic management systems. Procedures that can be used to perform quality checks on the data before their use in traffic management applications play a critical role in ensuring the proper functioning of condition-monitoring methods such as incident detection algorithms. Tests that screen traffic data can be divided into two categories: threshold value tests and tests that apply basic traffic flow theory principles. Tests that use traffic flow theory use the inherent relationships among speed, volume, and occupancy to assess data validity. In particular, a test that derives the average effective vehicle length from the observed traffic variables detects a wide range of erroneous data. A new data-screening procedure combines both threshold value tests and traffic flow theory-based tests and can serve as a valuable tool in traffic management applications.

This paper appears in Transportation Research Record No. 1727, Advanced Traffic Management Systems and Automated Highway Systems 2000.

English

p. 127-131

2000

Transportation Research Record

0309067340

References (5) ; Tables (2)

Errors; Highway traffic control; Traffic control; Traffic data; Traffic flow theory; Validity

Data screening; Threshold value tests

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB, ATRI

Dec 6 2001 12:00AM

• ARE MINIMIZATION OF DELAY AND MINIMIZATION OF FREEWAY CONGESTION COMPATIBLE RAMP METERING OBJECTIVES?
• AUTOMATIC VEHICLE IDENTIFICATION TECHNOLOGY-BASED FREEWAY INCIDENT DETECTION
• CALIBRATION OF PLATOON DISPERSION PARAMETERS ON THE BASIS OF LINK TRAVEL TIME STATISTICS
• COMPARISON OF VISSIM AND CORSIM TRAFFIC SIMULATION MODELS ON A CONGESTED NETWORK
• CONTROL STRATEGIES FOR TRANSIT PRIORITY
• DEVELOPMENT AND EVALUATION OF INTELLIGENT BUS PRIORITY CONCEPT
• ENHANCED GENETIC ALGORITHM FOR SIGNAL-TIMING OPTIMIZATION OF OVERSATURATED INTERSECTIONS
• FORMULATION OF REAL-TIME CONTROL POLICY FOR OVERSATURATED ARTERIALS
• FREEWAY TRAFFIC SPEED ESTIMATION WITH SINGLE-LOOP OUTPUTS
• GENETIC ALGORITHMS FOR TRAFFIC SIGNAL CONTROL AND QUEUE MANAGEMENT OF OVERSATURATED TWO-WAY ARTERIALS
• IMPACT OF EMERGENCY VEHICLE PREEMPTION ON SIGNALIZED CORRIDOR OPERATION: AN EVALUATION
• INTEGRATED TRAFFIC-RESPONSIVE URBAN CORRIDOR CONTROL STRATEGY IN GLASGOW, SCOTLAND: APPLICATION AND EVALUATION
• MAXIMUM POSSIBLE WEAVING VOLUME FOR EFFECTIVE OPERATIONS OF RAMP-WEAVE AREAS: ONLINE ESTIMATION
• PROGRESSIVE DEPLOYMENT STEPS LEADING TOWARD AN AUTOMATED HIGHWAY SYSTEM
• REMOTE SIMULATION TO EVALUATE REAL-TIME TRAFFIC CONTROL STRATEGIES
• SCOOT REAL-TIME ADAPTIVE CONTROL IN A CORSIM SIMULATION ENVIRONMENT
• SIGNAL COORDINATION AND ARTERIAL CAPACITY IN OVERSATURATED CONDITIONS
• TRAFFIC SIGNAL COORDINATION ACROSS JURISDICTIONAL BOUNDARIES: FIELD EVALUATION OF EFFICIENCY, ENERGY, ENVIRONMENTAL, AND SAFETY IMPACTS