01099838

Component

https://doi.org/10.3141/2088-07

http://scholar.google.com...iber&publication_year=2008

A country-specific analysis of freeway traffic oscillations was conducted. Loop detector data from sites in the United States, Germany, and the United Kingdom were analyzed. With the use of a method applied in previous work, traffic oscillations were identified in all three countries. Calculation of the cross-correlation coefficient revealed that they traveled upstream at speeds of about 19 to 20 km/h at the U.S. site, 16 km/h at the German site, and 14 km/h on the U.K. freeway. Similar magnitudes were found in the literature verifying the hypothesis that they propagated faster in the United States than in Germany. Furthermore, an oscillation frequency was identified by calculation of the data’s autocorrelation. However, since the oscillation frequency was likely to be site specific, conclusions regarding general differences between the frequencies measured in different countries cannot yet be made. For the sites analyzed, it was found that oscillations appeared every 8 to 12 min on the M4 (U.K. site), every 10 to 30 min on the A9 (German site), and every 3 to 6 min on OR-217 (U.S. site). Although the magnitudes of the latter two countries were supported by the literature, further empirical research on several different sites should be pursued to draw final conclusions.

01121596

English

pp 57-67

2008

Transportation Research Record: Journal of the Transportation Research Board

9780309126038

Print

Figures (9) ; References (27) ; Tables (3)

Alternatives analysis; Empirical methods; Freeway operations; Perturbations; Traffic characteristics

Traffic flow disturbance propagation; Traffic oscillations

Germany; United Kingdom; United States

Highways; Operations and Traffic Management; I71: Traffic Theory

TRIS, TRB, ATRI

Jan 29 2008 2:39PM

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• Calibrating Car-Following Models by Using Trajectory Data: Methodological Study
• Comparison of Simulation-Based and Model-Based Calibrations of Traffic-Flow Microsimulation Models
• Comparisons of Speed–Spacing Relations Under General Car Following Versus Lane Changing
• Desired Speed Distributions on Two-Lane Highways Under Various Conditions
• Empirical Study of Behavioral Theory of Traffic Flow: Analysis of Recurrent Bottleneck
• Estimating Acceleration and Lane-Changing Dynamics from Next Generation Simulation Trajectory Data
• Estimating Individual Speed–Spacing Relationship and Assessing Ability of Newell’s Car-Following Model to Reproduce Trajectories
• Evaluation of Corridor Traffic Management and Planning Strategies That Use Microsimulation: A Case Study
• FASTLANE: New Multiclass First-Order Traffic Flow Model
• From Existing Accident-Free Car-Following Models to Colliding Vehicles: Exploration and Assessment
• Lane Selection Model for Urban Intersections
• Macroscopic Modeling Framework Unifying Kinematic Wave Modeling and Three-Phase Traffic Theory
• Microsimulation Calibration Using Speed–Flow Relationships
• Modeling Driver Behavior as Sequential Risk-Taking Task
• New Behavioral Model for Microscopic Freeway Traffic-Flow Simulation
• On-Ramp Metering Based on Three-Phase Traffic Theory Downstream Off-Ramp and Upstream On-Ramp Bottlenecks
• Oversaturated Freeway Flow Algorithm for Use in Next Generation Simulation
• The Less-Than-Perfect Driver: A Model of Collision-Inclusive Car-Following Behavior
• Use of Microsimulation to Model Day-to-Day Variability of Intersection Performance
• Validity of Trajectory-Based Calibration Approach of Car-Following Models in Presence of Measurement Errors
• What Do Different Traffic Flow Models Mean for System-Optimal Dynamic Traffic Assignment in a Many-to-One Network?