Brisbane Strategic Transport Model (BSTM) Model Improvement Program

Overview

AITPM National Conference Adelaide, South Australia

12 – 15 August, 2014

AITPM Transport Modelling Seminar 22 May 2013

BSTM Model Improvement Program – What is it?

• A medium term program of works to improve modelling products and processes in all their aspects

•A joint program with Brisbane City Council (BCC) for a single BSTM model (now 2 versions) with TMR as the model owner

•This program will provide significant improvements to both TMR and BCC model processes and practices

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Where is it?

SEQSTMBSTM-MM

(BNE)

•Southeast Queensland:

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Why is this being done?

• Existing models aging – some components go back pre-2001

• Last significant update was about 2008 – upgrade to full multi-modal capability

• 2011 Review and Audit Recommendations (TMR and BCC joint)

• Questions asked of models increasing in complexity and detail

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – When will this Program happen?

• Program of works started in earnest at the end of 2012

• Program is expected to run to mid 2015 depending on resources

• The program is designed to balance product quality and product delivery

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – How will this project happen?

• Improvements were identified through:

- BSTM-MM Experience

- The Review and Audit

- Local/International experience

• Works are separated into task componentsto manage work streams and provide contractor opportunities

• TMR contract out most components (subject to funding)

• Timelines dependant on resourcing

• A Program of works was developed from identified improvements

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Key Elements of the Program

• Governance and Control

• Quick Wins

•Performance Fundamentals

•Additional Functionality

•Design Fundamentals

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Governance and Control

•Meso (SATURN) Modelling Guidelines and Criteria (Complete)

• Ownership - Responsible custodians of transport modelling for the State.

• Consistency – Evaluate & compare across projects in a robust consistent way

•Macro Modelling Guidelines and Criteria (progressing)

•Efficiency – How we do our work with fewer resources

Tools & techniques can provide options assessment and consistency

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Quick wins

• Python Scripting

– reduces run times

•Meso (SATURN) Modelling Guidelines and Criteria

– consistency in SATURN coding, methodology and outputs

– improve ability to compare projects from differing models

•Standard Outputs

– Based on Reporting Sectors

– Suite of matrix and link based model output values

(avg. O-D speed, distance, vht, vkt)

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Design Fundamentals – Zone Revision

• Consistent to ABS SA1 geography

• Model boundaries consistent to LGA boundaries

• Increased zone detail in green field areas

• Increased zone consistency (population, trip productions, homogeneity (land use))

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Design Fundamentals – Zone Revision

Zone numbers standardised by District – DDxxRegular nodes consistent to zones by ‘District’

DDxxx

– Refine connectivity (arterial connections / through-connections)

– Separate PT walk accessfrom other access (green versus pink)

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Design Fundamentals – Network Build

– Existing Consistent to as built (SDRN, aerial photo, plans)

– Link bendiness

– Efficient Link-based intersection delay

– Future Consistent to design standards(transport & town planning)

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Design Fundamentals – Network Build

– Single 2-way vs. separate 1-way links on divided facilities

– Remove intermediate nodes – efficiency

– Maximise network consistency 2036 to 2011

– Standardise node numbering by districts

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Design Fundamentals – Time Period Refinement

– Facilitates implementing peak spreading

– Peak Periods split to hourly Crown and Shoulder

– Normalises reporting of traffic on hourly basis

– Improved Time of Day choice by purpose

– Improved time period factoring

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Performance Fundamentals

– VDF (Volume delay function)

Modified BPR based on link end intersection control (freeflow, giveway, signal)

– Trip Table Estimation

Additional HTS/JTW, review trip costs and calculationsReview choice segmentation

– Toll Modelling Improvements

– Additional functionality, improved outputs, post run benefits

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program – Performance Fundamentals

• Model Run processes

– Implement in EMME4 Modeller

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program– Additional Functionality

– Peak spreading – Crown to Shoulder

– Period Spreading – Shoulder to Interpeak/Rest of Day

– Remote parking (Park and walk) accessibility

– Parking Model

– PT Fare Structure flexibility/resilience

– PT Capacity constraints

passengers and vehicles

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program– Additional Functionality

– Segregate commercial vehicles

– FMM as an add-on

– Implement a level of active mode modelling

– Car ownership and accessibility detail

AITPM National Conference – Adelaide – 12 – 15 August 2014

BSTM Model Improvement Program– What’s happening today? In the next year?

• Zone and Network complete

• Time Period and Parking Model Refinement complete

• Generation, Distribution, & Mode Choice - end August complete

• Screenline program in September

•Toll improvements in

• PT Improvements Program

• Freight considerations

Balancing quality with time lines

AITPM National Conference, Adelaide, SA 12 – 15 August 2014

BSTM Model Improvement Program

Questions?