Our transport safety team has experience across all areas of road safety, including policy and strategy development, road design and traffic engineering, road user behaviour and education, crash investigation, and heavy vehicles. 


__David McTiernan

David McTiernan
GDipTrans&Traf, GDipMgt, BEng (Civil)
State Technical Leader NSW, National Leader
Transport Safety

M: +61 404 014 636


National Leader, Transport Safety

David is a civil engineer with over 27 years experience working for local government and ARRB in road design/traffic/road safety.  He holds a Bachelors Degree in Civil Engineering (Hons), Grad. Dip Technology Management, and Grad. Dip. In Transport and Traffic. He led ARRB’s NSW Transport Safety Team for over 12 years delivering projects for state and local road agencies, as well as private motorway operators and Australian and Overseas clients operating in the mining sector.  As the National Leader Transport Safety, David is focused on delivering knowledge to policy makers about transport safety issues and ensuring that practitioners have the necessary knowledge, skills and expertise to understand how safer road infrastructure can contribute to the national vision for zero death a serious injury on our roads.


Tia Gaffney pic circle bio style

Tia Gaffney
Principal Professional Leader, Transport Safety
M:+61 415 984 519


Principal Professional Leader,
Transport Safety

Tia is a Mechanical Engineer and experienced professional leader operating out of ARRB’s Victorian office with a focus on delivering high quality applied research to improving transport safety. With the help of clients and through successful projects, Tia's primary aim is to improve the safety of vehicles and transport infrastructure in accordance with the Safe System Approach. She is a recognised transport industry safety leader with more than 17 years of engineering and leadership experience in both the private and public sector through Mechanical and Forensic Engineering, Compliance, and Litigation-related roles. Tia has a solid track record of hands-on experience in strategic planning, innovation, project management and delivery while maintaining strong technical engineering skill and scientific focus. 

__Paul Hillier

Paul Hillier
BEng (Civil)
Principal Technology Leader, Transport Safety
M:+61 416 120 478


Principal Technology Leader –
Transport Safety

Paul has over 30 years’ experience in road system safety and network management in both the public and private sectors, including a decade within local government. He joined ARRB in July 2005 under a formal collaboration with TRL UK and since that date has been assigned various management and senior technical roles. Paul’s breadth of practical experience in road safety related risk and network management issues enables him to apply a holistic approach to problems and their solutions, including reviews of strategy, policy and practice, as well as in the development of local and national guidelines and standards. Paul is a highly regarded project leader and well-known speaker and trainer, delivering a range of presentations, workshops and webinars. He is also a passionate mentor of young professionals. His technical and training experience covers a number of countries, especially within SE Asia, and is across public and private sectors, including for NGOs, International Development Banks and a range of ‘blue-chip’ companies.



Anna Chevalier
Principal Technology Leader, Transport Safety
M:+61 435 017 083

Principal Technology Leader –
Transport Safety

With over 20 years’ experience in road safety across portfolios including road user behaviour; safety‐related in‐vehicle, roadside and wearable technology; and strategy and policy development, Dr Anna Chevalier is committed to developing and implementing research and programs which reduce the incidence of fatalities and injuries resulting from road crashes and extend the body of policy-relevant road safety knowledge. Anna’s achievements in delivering programs for government are underpinned by academic expertise in evidence‐based research. Her strengths include benchmarking; design, management and quantitative and qualitative evaluations of large-scale innovative-technology trials; and statistical analysis of a range of datasets. Anna has designed, implemented and evaluated ground‐breaking programs related to connected vehicles, automated vehicles, people-plant proximity warning technology in road construction sites, tunnel safety and driving behaviour, speed cameras, roadwork initiatives, naturalistic driving, safety surrogate measures, driver-feedback systems, wearable technologies, intelligent speed adaption, automatic crash notification, driver fatigue and distraction detection systems, alcohol interlocks and tyre deflation devices. Anna has published in peer-reviewed international road safety and public health journals, and presented and co-authored over 50 presentations for international and national road safety conferences. She is sought out by road agencies to provide subject matter expertise on a wide range of road safety issues and initiatives, including strategy, guideline, trial and evaluation development.

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