Learn the the essential concepts of traffic modelling and principles of traffic analysis

This online training program is conducted via Webex for your convenience.


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29-31 May 2024
10am-1pm AEST (each day)


TypeEarly BirdStandard
Full Program$1254 AUD$1386 AUD

Please note:

  • Prices listed are in AUD and includes GST (Sales Tax).
  • Early Bird tickets are only available for a limited time and limited allocation.
  • The ticket fee displayed on Eventbrite is per person.You can also register and pay for other attendees in Eventbrite.
  • Please contact us to register if you are located outside Australia.

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If a formal quote is required for this training program, please contact us using the form below.

Who should attend?

This online training program is offered for traffic and transport professionals and students with any level of experience. It will be of benefit to people interested in the essential concepts of traffic modelling and principles of traffic analysis.

This training will focus on traffic variables, concepts and principles that need to be understood for effective intersection and network modelling from a practical perspective using an analytical software tool such as SIDRA INTERSECTION. These traffic variables are of importance in preparing input, interpreting output, and calibrating the model for best representation of real-life traffic conditions.

The knowledge gained at this online training will be useful generally in the use of all traffic and transport modelling software tools.

This program has been prepared by Dr Rahmi Akçelik, a leading scientist and software developer with 50 years of practical, research and training experience in the area of road traffic operations, traffic engineering, management and control.

Setup Requirements

Trainees must read and understand these important instructions to be able to attend our online training programs. Please use our Contact Form if you have any questions.

Program Contents

SIDRA MODEL FUNDAMENTALS consists of 3 Modules held over 3 days. The sections below give important information about the contents of this training program.

Download this Program: PDF - 153 KB
Last Revised: 10 May 2023

This program has been prepared according to driving on the left-hand side of the road and using Metric units for countries such as Australia, New Zealand, South Africa, Malaysia, Singapore, India and UK.

Traffic Flow Fundamentals, Uninterrupted and Interrupted Flows

Topic A1: Traffic Models - An Introduction

Model Benefits / Objectives, Model Consistency, Movement Classes. Analytical and Microsimulation Models, Model Categories, Model Types, Model Level of Detail, Lane-Based Modelling. About Microsimulation Models. Model Complexity vs Model Error, Uncertainty: Accuracy and Precision, Decisions based on traffic modelling, Understanding Traffic Models.

Topic A2: Fundamentals of Traffic Flow

Uninterrupted and Interrupted Flows, Three Key Parameters, Headway - Spacing - Speed relationship. Density and Flow Rate.

Exercise A2: Speed, Spacing, Headway, Density, Flow Rate

Q & A

Topic A3: Uninterrupted Flows

Definition, Spacing - Speed - Flow, Other Fundamental Relationships, Speed-Flow Models for Uninterrupted Traffic Facilities. Spot Speed, Travel Speed and Travel Time. Bunched Headway Model, Proportion Bunched for Uninterrupted Flows, Extra Bunching for Upstream Signal Effects. Arrival Headway Distributions.

Exercise A3: Proportion Bunched and Extra Bunching

Q & A

Topic A4: Interrupted Flows

Definition, Conflict points at intersections. Choice of intersection type: Signals vs Roundabouts. Traffic Control (Intersections, Crossings, Interchanges). Alternative intersections and interchanges, SIDRA INTERSECTION Network Templates. Summary of Models for Traffic Control (Interrupted Flow).

Topic A5: Demand, Capacity, Degree of Saturation

Demand Flows, Peaking. Residual Queue and Oversaturation Delay.
Capacity, Degree of Saturation, Practical Capacity

Exercise A5: Saturation Flow Rate and Degree of Saturation

Q & A

Topic A6: Lane Flows and Unequal Lane Use

Causes of Unequal Lane Use at Intersections. Unequal Lane Use at Closely-Spaced Intersections. Lane Utilisation Ratio. Approach Capacity (Effective). Unequal Lane Use Example. Defacto Exclusive Lanes.

Exercise A6: Lane Utilisation Ratio and Approach Capacity (Effective)

Q & A

Signal Timing, Saturation Flows, Pedestrians, Signal Coordination

Topic B1: Saturation Flow

Saturation Flow Rate and Speed, Queue Discharge Surveys. Saturation Headway Model. Saturation Flow, Start Loss, End Gain. Displayed and Effective Green Times. Saturation Flow Survey, SCATS MF. Short Lane Saturation Flow, Short Lane Queue.

Exercise B1: Saturation Headway and Saturation Flow Rate

Q & A

Topic B2: Saturation Flow Estimation

Saturation Flow Estimation in veh/h, Movement Class and Turning Vehicle Effects. Flow Rate and Saturation Flow Rate in veh/h and tcu/h. Shared Lane Saturation Flow Rate.

Exercise B2: Shared Lane Saturation Flow Rate

Q & A

Topic B3: Traffic Signal Timing

Signal Timing Analysis Methods (EQUISAT /SCATS and Actuated). Appropriate Cycle Time option according to the objective of modelling. Signal Phasing, Variable Phase Sequence Analysis. Common Control Groups. Critical Movement Diagram.

Exercise B3: Critical Movement Diagram

Topic B4: Pedestrians

Pedestrian Crossing Types (Signalised Intersections, Midblock Crossings). Pedestrians at Signals, Pedestrian Protection. Pedestrian Crossing Distances and Speeds, Pedestrian Minimum Time, Pedestrian Timing Parameters. Pedestrian Actuation. Unsignalised Pedestrian Crossing Analysis.

Exercise B4: Pedestrian Minimum Time

Q & A

Topic B5: Traffic Signal Coordination

Signal Platoon Patterns, Platoon Ratio, Arrival Type. Platoon Dispersion Model. Offset Definition, Relative Offset, Stopline Travel Time. Time-Distance Diagram.

Exercise B5: Platoon Ratio and Arrival Type

Q & A

Roundabouts, Sign Control, Network Modelling, Performance and LOS, Model Calibration

Topic C1: Roundabouts

Roundabout Capacity Models, Unequal lane use cases as observed at UK Roundabouts. SIDRA Roundabout Capacity Model. Capacity model with roundabout approach interactions. Follow-up Headway and Critical Gap, A useful rule of thumb for gap acceptance parameters, Other Features of SIDRA Roundabout Model, Bunched Headway Model, Geometry parameters. Capacity Constraint, Unbalanced Flows, Roundabout Metering Signals.

Exercise C1: Circulating Flow Rate with Capacity Constraint

Q & A

Topic C2: Sign Control

Gap Acceptance Model (Driver Behaviour Focus), Gap Acceptance Parameters (Base values and Adjustments), Movement Class Effects, Opposing Flow Effects. Gap Acceptance Model by Signal Analogy. Gap Acceptance Survey Method.

Exercise C2: Critical Gap and Follow-Up Headway Adjustment

Q & A

Topic C3: Intersection Performance and Level of Service

Delay definitions, Queue definitions. SIDRA Performance Estimates. Back of Queue Survey, Back of Queue, Queue Move-ups, Delay. Overflow Concept, Fundamental Diagram of Intersection Performance. Level of Service (Intersection, Network, Route).
Vehicle Path Model, Acceleration - Deceleration Models. Fuel Consumption and Emissions, Operating Cost.

Exercise C3: Level of Service

Topic C4: Model Calibration

Local Conditions and Model Calibration. Key Model Calibration Parameters.
SIDRA Excel Applications for Field Surveys. Signal Saturation Flow Example.
SIDRA Lane-based INTERSECTION and NETWORK model. Iterative Methods for Intersection and Network Modelling.

Exercise C4: Saturation Flow Calibration

Q & A

Topic C5: Network Modelling

Lane Blockage and Capacity Constraint. SIDRA NETWORK Model. Signalised Diamond Interchange (SDI), Diverging Diamond Interchange (DDI), Continuous Flow Intersection (CFI). Lane Movement Flow Proportions. Capacity Constraint Example. Capacity Reduction due to Lane Blockage, Midblock Lane Changes.

Exercise C5: Capacity Reduction due to Lane Blockage

Q & A

Training Evaluation Survey

SIDRA Presenters

The following presenters will conduct this training program:

Mark Besley is a scientist and software specialist who has worked in the traffic management area since 1980s. He has been making a significant contribution to the development of the SIDRA INTERSECTION software in collaboration with Dr Rahmi Akçelik during the last 30+ years. He has trained several thousand professionals in over 300 workshops, courses and seminars.

Mark has been involved in many aspects of research on traffic operations including traffic network models, incident detection, fuel consumption estimation, traffic data collection and analysis.

Dr Ian Espada is a Senior Traffic Modeller / Analyst at SIDRA SOLUTIONS. He has more than 20 years of work experience in the role of researcher, transport/traffic planner, transport survey specialist, transport demand modeller, and transport economist. He had an 11-year career at the Australian Road Research Board where he was the team leader of the Network Operations Team under the Future Transport Systems Working Group. Ian worked for 7 years as a transport planner / modeller for ALMEC Corporation, Japan. He was also a sessional lecturer on transport demand modelling at Swinburne University for 10 years.

Ian has a Ph.D. degree in transportation engineering and planning from the University of Tokyo and an M.Eng. degree in transportation planning and traffic engineering from the Asian Institute of Technology, Thailand. Ian was the Australian representative to the World Road Association technical committee on road network operations from 2016 to 2019.

Training Books

You will be sent training books in PDF format, before the training. We also recommend that you watch these tutorial videos before the training.


General Information

Please read the following important information about our training programs

We use Eventbrite ticketing system for registration. You will receive various notifcations and reminders regarding the event from Eventbrite.

Units and displays in presentations and SIDRA project files will be configured according to region. These are based on:

  • SIDRA Standard Left software setup using Left-Hand traffic rule and Metric units.
  • SIDRA Standard Right software setup using Right-Hand traffic rule and Metric units.
  • SIDRA US HCM software setup using Right-hand traffic rule and US Customary units.

We will ask you to complete and submit a Training Evaluation Survey so we can get feedback on your experience. The information and feedback you provide is valuable for us in designing and improving our programs.

After completion of training, we will send you a Certificate of Completion. We will also send you links for any other relevant downloads e.g., If there were excercises during training then we will send Answers to Exercises Books.

The training will be in English.

By registering for this training, you are agreeing to the following conditions:

  • Any form of recording is prohibited. This includes both video and audio.
  • Only the registered attendee may attend. If you wish to transfer your position to someone else in your organisation, prior notice must be given (at least 48 hours prior to the event).
  • We do not offer refunds; however you may transfer your registration to a colleague within the same organisation as explained above.
  • For Online Training - Please review the Setup Requirements and ensure that they can be met.

Ticket fees are non-refundable. Another delegate may be substituted free of charge. Please contact us about delegate substitution in advance.

Transfer between events is not allowed.



Please use this Contact Form for any software sales, training or general enquiries.


Telephone: +61 3 9830 7123
Mobile: +61 423 024 372

Office hours

Monday to Friday
9.00 am to 5.00 pm AEST

Current Time in Melbourne, AU:  AEST

Understanding fundamental concepts and principles for effective intersection and network modelling

"A good understanding of traffic operations is essential for effective use of traffic models for intersection and network design, performance assessment and transport planning purposes. Model calibration is an important element of this process. SIDRA Training is not just about intersection and network analysis, but aims to improve general understanding of operational analysis of all traffic facilities."

Dr Rahmi Akçelik


Here are some positive comments from delegates who have attended our SIDRA MODEL FUNDAMENTALS online training program.

It was a good experience for the improvement and understanding of the basic and advance concepts of SIDRA. It helps to understand how things works and how to interpret the results. The basic clarification is extremely necessary to find solutions for a particular problem/scenario.

Udit Bhatti
Graduate Traffic Engineer, Traffic Planning Consultants Limited

Instructors are very knowledgeable and any questions were answered in real-time by the SIDRA team during the course. Provides a strong foundational overview of traffic engineering with background information on SIDRA default settings.

Ashley Schalken
Traffic Engineer, Transmax

SIDRA INTERSECTION is a powerful software which can be used by transport planners and engineers to inform better decision making about critical infrastructure investments around intersections and the implications that can be drawn from modelling traffic & pedestrian flows. This also includes useful data that can be modelled for cost or even carbon emissions analyses. The course is well structured and the trainings are accessible for those without prior knowledge.If you are a transport planner but not trained as a transport engineer you may want to consider taking Sidra Model Fundamentals first to establish the background theory to the software and intersection modelling.

Vincent Ng
Transport Planner Modeler, City of Casey

The content taught delves into the mechanics of SIDRA and the theories behind traffic modelling which is helpful for a traffic engineer.

Pearce Javat
Graduate Engineer, Main Roads Western Australia
I had very limited understanding of SIDRA INTERSECTION capability, parameters and outputs prior to the SIDRA MODEL FUNDAMENTALS training. Following the training I feel much more confident in dealing with SIDRA model practitioners to ensure we can optimise SIDRA capability to inform transport project decision making.
Amanda French
Manager Network Development, Transport for NSW
Registration open for online training in May and June 2024. Learn more..