Transposition

What Transposition does

TransPosition, the trading name of Peter Davidson Consulting Pty Ltd, is an Australian transport planning and modelling consultancy founded in 1993 and headquartered in Brisbane. The firm provides integrated transport planning, project evaluation, toll road analysis, accessibility analysis, statistical and economic analysis, land use projections, and GIS / technical software development to Australian state and local governments and selected private developers. Named clients include the Queensland Department of Transport and Main Roads, Brisbane City Council, Toowoomba Regional Council, the South Australian Department of Transport, TransLink, and the Sunshine Coast Regional Council, with marquee engagements on the Queensland Motorways Limited sale and the WestConsea and Toowoomba Second Range Crossing business cases.

The company's core technology is the proprietary TPACS Model (also known as the 4S Model — Stochastic Segmented Slice Simulation), a multi-modal strategic transport model that integrates destination choice, mode choice, and route assignment using node-to-node travel on fully detailed networks rather than the traditional zone-based four-step architecture. This enables explicit intrazonal travel time and distance calculation, multi-modal integration (walking, cycling, car, public transport), and specialised extensions including autonomous vehicle sensitivity modelling, shared autonomous vehicle fleet scenarios, a public transport feeder microsimulation, and a lot-level land use projection model. The TPACS Model is calibrated for Brisbane, Toowoomba, Melbourne, and Sydney and covers the whole of Queensland, NSW, and Victoria.

TransPosition operates a sales-led, project-based consulting model, winning work through competitive government tenders, conference presentations (AITPM, ATRF, TRB, ITS Australia), and its published research record. Revenue is generated from professional services fees on project-by-project engagements; no productised SaaS revenue is evident. The firm employs a small, specialised team of approximately eight named professionals led by founder Peter Davidson, with no external institutional investment and no subsidiaries. Pricing is not publicly disclosed and is negotiated per engagement.

Name

Transposition

Legal name

Peter Davidson Consulting Pty Ltd

Website

https://transposition.com.au

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

1–10 employees

Short description

TransPosition is a Brisbane-based Australian transport planning consultancy, founded 1993, that provides strategic transport modelling, toll road analysis, accessibility studies, and land use projections to state and local government clients using its proprietary TPACS (4S) multi-modal model.

Ownership category

akta.pro rank

Product category

Transport Planning & Modelling Consultancy

NAICS

Support Activities for Transportation (488)

SIC

Transportation Services (4700)

akta.pro primary industry

Carrier TMS (Trucking Dispatch & Back-Office) (TLAEAAAC)

akta.pro secondary industry

Electronic Toll Collection (ETC) & Transponder/Tag Systems (RFID/DSRC) (TLAJABAA)

Keywords

• Transport modelling
• Transport planning
• Toll road analysis
• Accessibility analysis
• Land use projections

Headquarters

HQ city

Brisbane

HQ country

Australia

HQ region

Oceania

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Professional Consulting Services: Transport planning and modelling consulting services provided to government agencies and private sector clients through project-based engagements

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

TransPosition provides transport planning and modelling consulting services to government agencies, local councils, and private developers in Australia. Its core proprietary asset is the TPACS (4S) Model — a Stochastic Segmented Slice Simulation tool that performs multi-modal strategic transport modelling with node-to-node travel on fully detailed networks rather than traffic zones — supplemented by PT Feeder Microsimulation, toll road demand modelling, accessibility analysis, land use projections, and custom transport/GIS software development.

Product overview

TransPosition is a transport planning and modeling consultancy offering a portfolio of proprietary models and professional services. Their core product is the TPACS Model (4S Model - Stochastic Segmented Slice Simulation), a multi-modal strategic transport model that operates without traditional traffic zones and models all travel point-to-point. This is complemented by a PT Feeder Microsimulation tool for autonomous vehicle integration analysis. Services include transport modeling, software development, accessibility analysis, data analysis, autonomous vehicle modeling, toll road modeling, and land use projections. The company operates primarily as a consulting firm rather than a software product vendor.

Differentiator

Problem solved

Functional benefit

Products and services

• TPACS Model (4S Model — Stochastic Segmented Slice Simulation) Proprietary multi-modal strategic transport model that performs destination choice, mode choice, and route assignment using node-to-node travel on fully detailed networks rather than traditional traffic zones, enabling explicit intrazonal travel times and distances. Used internally and offered as a modelling capability to government and private clients.
• PT Feeder Microsimulation Operational microsimulation model that examines the feasibility and cost of providing autonomous vehicle feeder services to public transport, determining fleet sizes, average occupancy, waiting times, and operational characteristics. Used to support client projects on autonomous public transport integration.
• Transport Modelling Services
• Transport Planning Services
• Toll Road Modelling
• Public and Active Transport Modelling
• Software Development Services
• Data Management Services
• Data Analysis Services
• Research Services
• Autonomous Vehicle Modelling
• Accessibility Analysis
• Growth Projections
• GPS Analysis

Quantifiable outcome

• Contributed to planning of over $9 billion worth of transport infrastructure
• +2 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• GHD: Large Australian-headquartered engineering, architecture, and environmental consulting firm with a transport planning and modelling practice. Competes for many of the same government transport projects but offers a much broader portfolio of services.
• AECOM: Global infrastructure consulting firm with a large transport planning practice covering strategic modelling, traffic impact assessment, and toll road advisory in Australia. Competes for the same government RFPs but with significantly larger scale and global brand.
• WSP: Global professional services firm with extensive transport planning and modelling capabilities in Australia, including strategic transport modelling and toll road advisory. Overlaps with TransPosition's service offering as part of a much broader infrastructure portfolio.
• Arup: Global engineering and design consultancy with strong transport planning credentials in Australia, including strategic modelling, public transport planning, and accessibility analysis. A large incumbent that competes with TransPosition on major infrastructure projects.
• Jacobs: Global professional services firm (including the former Sinclair Knight Merz) with a major transport planning practice in Australia. Provides strategic modelling, toll road advisory, and traffic engineering services that overlap with TransPosition's offerings.
• Mott MacDonald: Global engineering consultancy with transport planning and modelling expertise including strategic transport modelling, toll road PPP advisory, and public transport planning in Australia. A large incumbent that competes with TransPosition on government contracts.
• Cardno (now Stantec): Australian-origin infrastructure consulting firm (now part of Stantec) with transport planning and traffic engineering experience. Competes for government transport projects in Australia with a broader service portfolio than TransPosition.

Direct peers

• Bitzios Consulting: Australian transport consultancy with strength in traffic engineering, transport planning, and toll road demand modelling. Comparable niche specialist competing in the same Australian government market.
• SALT Consulting: Australian transport planning firm specializing in strategic modelling, active transport, public transport, and accessibility analysis. Comparable to TransPosition in size, service offering, and Australian government client base.
• Veitch Lister Consulting: Brisbane-based Australian transport planning consultancy with deep experience in strategic transport modelling, toll road analysis, and public transport planning. VLC is the closest direct competitor to TransPosition, serving similar government agencies with similar services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/TransPosition93
• Facebookfacebook.com/TransPositionTransport
• LinkedInlinkedin.com/company/transposition

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Transposition