00936075

Component

https://doi.org/10.3141/1811-18

http://scholar.google.com...rews&publication_year=2002

The real-time traffic adaptive control system (RT-TRACS) represents a new, state-of-the-art system in advanced traffic signal control. It was developed cooperatively by a team of U.S. academic, private, and public researchers under the guidance of the Federal Highway Administration. The system provides a framework to run multiple traffic control algorithms, existing ones as well as new adaptive algorithms, as they become available. The optimized policies for adaptive control (OPAC) strategy, which provides a dual capability of individual intersection control as well as coordinated control of intersections in a network, was the first adaptive algorithm implemented within the RT-TRACS framework. The operational features of the OPAC prototype version that was developed for RT-TRACS are presented, and its implementation in the Reston Parkway field research test bed in Northern Virginia is described. The implementation provided valuable insights into the performance of coordinated OPAC under various traffic conditions and site geometry. Observations indicate that the strategy was instrumental in reducing delays and stops, compared with a well-tuned fixed time system that was in place, while maintaining progression along the arterial. Valuable lessons were learned that should lead to improvements in future implementations of adaptive algorithms.

This paper appears in Transportation Research Record No. 1811, Advanced Traffic Management Systems for Freeways and Traffic Signal Systems 2002.

English

p. 148-156

2002

Transportation Research Record

0309077370

Figures (9) ; References (12)

Adaptive control; Advanced traffic management systems; Algorithms; Arterial highways; Field tests; Implementation; Policy; Real time data processing; Traffic signal control systems

Northern Virginia

Highways; Operations and Traffic Management; Policy; Research; I73: Traffic Control

TRIS, TRB, ATRI

Jan 8 2003 12:00AM

• ADAPTIVE SIGNAL CONTROL SYSTEM WITH ONLINE PERFORMANCE MEASURE FOR A SINGLE INTERSECTION
• AUTOMATIC REAL-TIME DETECTION AND CORRECTION OF ERRONEOUS DETECTOR DATA WITH FOURIER TRANSFORMS FOR ONLINE TRAFFIC CONTROL ARCHITECTURES
• BUS PRIORITY WITH HIGHLY INTERRUPTIBLE TRAFFIC SIGNAL CONTROL: SIMULATION OF SAN JUAN'S AVENIDA PONCE DE LEON
• DYNAMIC SIGNAL COORDINATION FOR NETWORKS WITH OVERSATURATED INTERSECTIONS
• EVALUATION OF RAMP CONTROL EFFECTIVENESS IN TWO TWIN CITIES FREEWAYS
• EVALUATION OF TRAFFIC FLOW ANALYSIS TOOLS APPLIED TO WORK ZONES BASED ON FLOW DATA COLLECTED IN THE FIELD
• FIELD OPERATIONAL TEST OF INTEGRATED FREEWAY RAMP METERING/ARTERIAL ADAPTIVE SIGNAL CONTROL: LESSONS LEARNED IN IRVINE, CALIFORNIA
• FREEWAY PERFORMANCE MEASUREMENT SYSTEM: OPERATIONAL ANALYSIS TOOL
• FREEWAY TRAVEL TIME PREDICTION WITH STATE-SPACE NEURAL NETWORKS: MODELING STATE-SPACE DYNAMICS WITH RECURRENT NEURAL NETWORKS
• INTEGRATED CONTROL STRATEGIES FOR SURFACE STREET AND FREEWAY SYSTEMS
• MOBILE SENSOR AND SAMPLE-BASED ALGORITHM FOR FREEWAY INCIDENT DETECTION
• MONITORING COMMUTER CONGESTION ON SURFACE STREETS IN REAL TIME
• OPTIMIZING TRAFFIC NETWORK SIGNALS AROUND RAILROAD CROSSINGS: MODEL VALIDATIONS
• PREDICTION OF TRAFFIC-ACTUATED PHASE TIMES ON ARTERIAL STREETS
• PROGRAM FOR OPTIMIZING DIAMOND INTERCHANGES IN OVERSATURATED CONDITIONS
• QUANTIFYING DELAY REDUCTION TO BUSES WITH SIGNAL PRIORITY TREATMENT IN MIXED-MODE OPERATION
• REALIZING BENEFITS OF ADAPTIVE SIGNAL CONTROL AT AN ISOLATED INTERSECTION
• TRANSFERABILITY OF A STOCHASTIC TOLL PLAZA COMPUTER MODEL
• USE OF LOCAL LANE DISTRIBUTION PATTERNS TO ESTIMATE MISSING DATA VALUES FROM TRAFFIC MONITORING SYSTEMS