00465550

Component

http://onlinepubs.trb.org...trr/1987/1112/1112-012.pdf

https://scholar.google.co...umar&publication_year=1987

Adaptive signal control at individual intersections relies on detectors to provide advance vehicle arrival information for real-time optimization of the signal operations. As much as 25 sec of advance information may be needed to achieve near optimal operations if flow rates reach about 700 vehicles per hour per lane (vphpl). However, it is often impossible or impractical to place detectors far enough from the intersection to provide the desired amount of information. The use of predicted data becomes a tempting alternative under the circumstance. In this paper, computer simulation is used to assess the desirability of using predicted data in combination with the data provided by the detectors for signal optimization. Three predictors are compared and one is chosen to assess the impact of using the predicted data. It is found that reliance on limited advance arrival information provided solely by the detectors is more desirable than using predicted data to increase the amount of advance information.

Publication of this paper sponsored by Committee on Traffic Flow Theory and Characteristics. 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

01418070

pp 89-98

1987

Transportation Research Record

0309044642

Print

Figures (12) ; References (14) ; Tables (1)

Forecasting; Optimization; Signalization; Traffic flow; Traffic simulation; Vehicle detectors

Highways; Operations and Traffic Management; I71: Traffic Theory

TRIS, TRB, ATRI

Feb 29 1988 12:00AM

• A DELAY MODEL FOR MULTIWAY STOP-SIGN INTERSECTIONS
• A MICROCOMPUTER-BASED SIMULATION PROGRAM FOR INTERSECTION SITES DURING RECONSTRUCTION
• A PERMITTED-MOVEMENT MODEL FOR TRANSYT-7F
• ADDITIONAL LOST TIME CAUSED BY PERMITTED LEFT TURNS
• DEVELOPMENT OF ANALYSIS PROCEDURES FOR SIGNALIZED INTERSECTIONS IN THE 1985 HIGHWAY CAPACITY MANUAL
• DEVELOPMENT OF GRAPHICS DISPLAYS FOR THE INTEGRATED TRAFFIC DATA SYSTEM
• DEVELOPMENT OF WEAVING AREA ANALYSIS PROCEDURES FOR THE 1985 HIGHWAY CAPACITY MANUAL
• EFFECT OF TRAFFIC MIX, VOLUME, AND GEOMETRICS ON THE TRIP TIME OF PASSENGER CARS AND TRUCKS ON URBAN FREEWAYS
• ENHANCED FREFLO: MODELING OF CONGESTED ENVIRONMENTS
• HIGHWAY ECONOMIC ANALYSIS EXPERIENCES WITH THE 1985 HIGHWAY CAPACITY MANUAL
• IMPROVED TECHNIQUES FOR FREEWAY SURVEILLANCE
• PASSING EXPERIMENT ON TWO-LANE RURAL HIGHWAYS
• SOME MEASUREMENTS OF ROBERTSON'S PLATOON DISPERSION FACTOR
• THE NETSIM GRAPHICS SYSTEM
• URBAN TRAFFIC NETWORK FLOW MODELS
• USING VOLUME-TO-CAPACITY RATIOS TO SUPPLEMENT DELAY AS CRITERIA FOR LEVELS OF SERVICE AT TRAFFIC SIGNALS
• VOLUME-TO-CAPACITY RATIO AND TRAFFIC ACCIDENTS ON INTERURBAN FOUR-LANE HIGHWAYS IN GREECE