Research topic

Capacity and saturation flow

63 publications, 1978 to 2026.

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2026
SIDRA Glossary of Road Traffic Analysis Terms
R. Akçelik Reference
2025
SIDRA Roundabout Presentation - TORUS Webinar Nov 2025
R. Akçelik Presentation
2025
A Roundabout Capacity Survey Method Using Gap Acceptance Cycles and Vehicle Trajectory Data
G. Chun, N.M. Rouphail, R. Akçelik Technical note
2025
New Survey Method for Calibration of Roundabout Capacity Models
G. Chun, N.M. Rouphail, R. Akçelik Presentation
2025
A New Roundabout Capacity Survey Method
G. Chun, N.M. Rouphail, R. Akçelik Presentation
2025
SIDRA Model Extensions for the Highway Capacity Manual
R. Akçelik Presentation
2024
Traffic modeling: micro-analytical meets micro-simulation
R. Akçelik Presentation
2024
SIDRA Multimodal Capacity and Performance Analysis for Roundabouts
R. Akçelik Presentation
2023
Use of SCATS MF to Calibrate SIDRA Saturation Flow
D. Nash, R. Akçelik, M. Besley, I. Espada Technical note
2022
Intersection Level of Service and Performance Discrepancies
R. Akçelik Conference paper
2022
A Comparative Analysis of Exponential and Linear Roundabout Capacity Models Using HCM Research Data
R. Akçelik, C. Shirke, M. Besley, I. Espada, D. Billinghurst Presentation
2022
Searching for a Gap Acceptance Theory Basis for Linear Capacity Models
R. Akçelik Technical note
2022
HCM 6 Extended Roundabout Capacity Model in SIDRA INTERSECTION
Akcelik & Associates Presentation
2018
Gap Acceptance Cycles for Modelling Roundabout Capacity and Performance
R. Akçelik Conference paper
2017
Roundabout Model Comparison Table
R. Akçelik Reference
2017
An Assessment of the Highway Capacity Manual Edition 6 Roundabout Capacity Model
R. Akçelik Conference paper
2017
A Comparison of Two Roundabout Capacity Models
E. Macioszek, R. Akçelik Conference paper
2015
Roundabouts in Australia: the state of the art on models and applications
R. Akçelik Presentation
2015
Development of Network Signal Timing Methodology in SIDRA INTERSECTION
R. Akçelik Presentation
2015
The Implications of Volatility in Day-to-Day Travel Flow and Road Capacity on Traffic Network Design Projects
M.D. Duell, T.S. Waller Journal article
2014
A Feasibility Study into the use of String Transport Systems for Passenger Rail in New South Wales
A.J. Hargraves Conference paper
2014
A New Lane-Based Model for Platooned Patterns at Closely-Spaced Signalised Intersections
R. Akçelik Conference paper
2012
Issues in Performance Assessment of Sign-Controlled Intersections
R. Akçelik Conference paper
2012
An Improved Method for Estimating Sign-Controlled Intersection Capacity
R. Akçelik Conference paper
2011
Some Common and Differing Aspects of Alternative Models for Roundabout Capacity and Performance Estimation
R. Akçelik Conference paper
2011
Roundabout Metering Signals: Capacity, Performance and Timing
R. Akçelik Conference paper
2011
Roundabout Design and Capacity Analysis in Australia and New Zealand
R. Akçelik Presentation
2011
ROUNDABOUTS - Comments on the SIDRA INTERSECTION Model and the TRL (UK) Linear Regression Model
R. Akçelik Paper
2011
Analysis of Single-Lane Roundabout Slip Lanes using SIDRA
M.N. Al-Ghandour, W.J. Rasdorf, B.M. Williams, B.J. Schroeder Conference paper
2011
An assessment of the Highway Capacity Manual 2010 roundabout capacity model
R. Akçelik Conference paper
2009
Evaluating Roundabout Capacity, Level of Service and Performance
R. Akçelik Conference paper
2008
The Relationship between Capacity and Driver Behaviour
R. Akçelik Conference paper
2007
Microsimulation and Analytical Models for Traffic Engineering
R. Akçelik Presentation
2007
A Review of Gap-Acceptance Capacity Models
R. Akçelik Conference paper
2006
The Freight Capacity Model: A tool for exploring the future of road freight and its impact on the Environment
Y. Michel, J. Luk Conference paper
2005
Roundabout Model Calibration Issues and a Case Study
R. Akçelik Conference paper
2005
Capacity and Performance Analysis of Roundabout Metering Signals
R. Akçelik Conference paper
2004
Examining Travel Time Variability Using AVI Data
R. Li Conference paper
2004
Differences between the AUSTROADS Roundabout Guide and aaSIDRA Roundabout Analysis Methods
R. Akçelik, M. Besley Journal article
2004
Comparison of Delay Estimates at Under-Saturated and Over-Saturated Pre-Timed Signalized Intersections
F. Dion, H. Rakha, Y-S Kang Journal article
2003
A Roundabout Case Study Comparing Capacity Estimates from Alternative Analytical Models
R. Akçelik Conference paper
2002
Evaluation of Toll Collection Performance Using Traffic Simulation
N. Poon, H. Dia Conference paper
2001
Progression Factors in the HCM 2000 Queue and Delay Models for Traffic Signals
R. Akçelik Report
2001
HCM 2000 Back of Queue Model for Signalised Intersections
R. Akçelik Report
1998
Roundabout Capacity and Performance
R. Akçelik Presentation
1997
Analysis of Roundabout Performance by Modelling Approach Flow Interactions
R. Akçelik, E. Chung, M. Besley Conference paper
1996
Performance of Roundabouts under Heavy Demand Conditions
R. Akçelik, E. Chung, M. Besley Journal article
1994
Recalibrating SIDRA's Saturation Flow Estimation Models
A.P. Cuddon Journal article
1994
Gap Acceptance Modelling by Traffic Signal Analogy
R. Akçelik Journal article
1994
Estimation of Green Times and Cycle Time for Vehicle-Actuated Signals
R. Akçelik Journal article
1993
Estimation of Delays at Traffic Signals for Variable Demand Conditions
R. Akçelik, N.M. Rouphail Paper
1992
The Effect of Heavy Vehicles on Saturation Flow at Signalised Intersections
A.P. Cuddon, K.W. Ogden Conference paper
1992
Oversaturation Delay Estimates with Consideration of Peaking
N.M. Rouphail, R. Akçelik Journal article
1992
Comparison of Roundabout Capacity and Delay Estimates from Analytical and Simulation Models
E. Chung, W. Young, R. Akçelik Conference paper
1991
Implementations of the Australian Roundabout Analysis Method in SIDRA
R. Akçelik, R. Troutbeck Conference paper
1990
SIDRA for the Highway Capacity Manual
R. Akçelik Conference paper
1988
The Highway Capacity Manual delay formula for Signalised Intersections
R. Akçelik Journal article
1988
Opposed Turns at Signalised Intersections: The Australian Method
R. Akçelik Journal article
1988
Capacity of a Shared Lane
R. Akçelik Conference paper
1987
Estimating Effect of Vehicle Characteristics on Fuel Consumption
R. Akçelik, D.C. Biggs Journal article
1984
SIDRA-2 does it Lane by Lane
R. Akçelik Conference paper
1981
Traffic Signals: Capacity and Timing Analysis
R. Akçelik Report
1978
X and Y in Traffic Signal Design
R. Akçelik Conference paper

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