00803808

Component

https://doi.org/10.3141/1727-04

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

The manner in which the adaptive signal control system SCOOT (Split, Cycle, Offset Optimization Technique) has been connected to the CORSIM traffic simulation model is described. To demonstrate the connection, CORSIM simulates the traffic activity of a six-node traffic network under SCOOT's adaptive traffic signal control. CORSIM's "virtual detectors" provide the necessary data for SCOOT optimization in real time. In a completed loop, the optimized signal timing is then communicated from SCOOT to CORSIM, which implements the timing and updates the traffic simulation. This means that SCOOT is now functioning in an entirely simulated environment. A comparison of delay and travel time is presented for a six-intersection street network under SCOOT control and under fixed-time area control optimized with TRANSYT-7F. The results show reductions in delay and numbers of stops of 20 to 30%. Previously, the measurement of the benefit of adaptive control has been limited to evaluations of systems after implementation. It is shown how SCOOT can now be evaluated under various network traffic conditions in a simulation environment and tested on a specific city network to evaluate the benefits before capital costs are committed.

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

English

p. 27-31

2000

Transportation Research Record

0309067340

Figures (2) ; References (28) ; Tables (3)

Adaptive control; Optimization; Real time control; Traffic delays; Traffic signal timing; Traffic simulation; Travel time

CORSIM (Traffic simulation model); SCOOT (Computer program); TRANSYT (Computer program)

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB, ATRI

Dec 5 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
• NEW PROCEDURE FOR DETECTOR DATA SCREENING IN TRAFFIC MANAGEMENT SYSTEMS
• PROGRESSIVE DEPLOYMENT STEPS LEADING TOWARD AN AUTOMATED HIGHWAY SYSTEM
• REMOTE SIMULATION TO EVALUATE REAL-TIME TRAFFIC CONTROL STRATEGIES
• SIGNAL COORDINATION AND ARTERIAL CAPACITY IN OVERSATURATED CONDITIONS
• TRAFFIC SIGNAL COORDINATION ACROSS JURISDICTIONAL BOUNDARIES: FIELD EVALUATION OF EFFICIENCY, ENERGY, ENVIRONMENTAL, AND SAFETY IMPACTS