00396839

Component

http://onlinepubs.trb.org...s/trr/1984/971/971-011.pdf

https://scholar.google.co...+May&publication_year=1984

Preliminary studies with the FREFLO freeway simulation model showed it to have difficulty depicting congested flow situations. This problem is traced to the model's transformation from the continuous to the discrete domain. Methods of determining the proper discretization intervals are shown along with simulation examples of a simple freeway. The properly discrete model requires an excessive amount of computer time for a real freeway simulation. Hence, two adaptive schemes that reduce the computing time to a manageable level are presented. The resulting model, FRECON, is then calibrated and validated using five peak-period data sets from the Santa Monica Freeway in Los Angeles.

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

00452357

HS-038 737

pp 80-92

1984

Transportation Research Record

0309037530

Print

Figures (16) ; References (9) ; Tables (10)

Accuracy; Calibration; Discrete systems; Freeways; Simulation; Structural analysis; Traffic congestion; Validation

Highways; Operations and Traffic Management; I71: Traffic Theory

HSL, TRIS, TRB

Jan 31 1986 12:00AM

• ANALYSIS OF UNSIGNALIZED INTERSECTION CAPACITY
• ANOTHER LOOK AT STORAGE REQUIREMENTS FOR BANK DRIVE-IN FACILITIES
• AUTOMATED COLLECTION OF VEHICULAR DELAY DATA AT INTERSECTIONS
• CAPACITY, SPEED, AND PLATOONING VEHICLE EQUIVALENTS FOR TWO-LANE RURAL HIGHWAYS (DISCUSSION ANDD CLOSURE)
• COMPUTER SIMULATION TO COMPARE FREEWAY IMPROVEMENTS (ABRIDGMENT)
• DEVELOPMENT AND APPLICATION OF A MACROSCOPIC MODEL FOR RURAL HIGHWAYS
• DISCONTINUITY IN EQUILIBRIUM FREEWAY TRAFFIC FLOW
• DYNAMIC FREEWAY SIMULATION PROGRAM FOR PERSONAL COMPUTERS
• EVALUATING CAPACITIES OF ONE-LANE ROADS WITH TURNOUTS
• INVESTIGATION OF NETWORK-LEVEL TRAFFIC FLOW RELATIONSHIPS: SOME SIMULATION RESULTS
• LEFT-TURN EQUIVALENCIES FOR OPPOSED, SHARED, LEFT-TURN LANES
• LEVEL OF SERVICE CONCEPTS: DEVELOPMENT, PHILOSOPHIES, AND IMPLICATIONS
• PASSENGER CAR EQUIVALENTS FOR UNINTERRUPTED FLOW: REVISION OF CIRCULAR 212 VALUES
• SIGNALIZED INTERSECTION DELAY MODELS--A PRIMER FOR THE UNINITIATED
• SIMULATION OF TRAFFIC PERFORMANCE, VEHICLE EMISSIONS, AND FUEL CONSUMPTION AT INTERSECTIONS: THE TEXAS-II MODEL
• SIMULATION STUDY OF GUIDELINES FOR RURAL ROAD IMPROVEMENTS
• USE OF THE NCHRP SIGNALIZED INTERSECTION CAPACITY METHOD--A SOUTH AFRICAN EXPERIENCE
• VEHICLE-DETECTOR INTERACTIONS AND ANALYSIS OF TRAFFIC-ACTUATED SIGNAL CONTROLS