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TMAA’s National Board


Andrew White

TMAA President and NT Board Member

Andrew’s traffic management industry knowledge and expertise hails from over two decades working in Management and Director roles. He has held positions on committees and worked closely with other roadwork based associations including Austroads, Standards Australia, AfPA, CCF and RIAA.  His ability to negotiate with road authorities and government drives the association’s goals and objectives. Andrew’s roles within the TMAA include Chair and Treasurer positions. He delivers key stakeholder engagement and industry passion for consistency and harmonisation across our industry.

Andrew is the TMAA President and TMAA NT Board Member.

Ph: 0404 041 632
Email: andrew.white@tmaa.asn.au

John Cassel

TMAA Vice President and QLD Board Member

After 30 years in the construction industry, John Cassel was appointed Quality Systems, RTO and Compliance Manager with the Acquired Awareness group in 2013 and General Manager in 2020. John has served as Vice Chair TMAA (QLD) since 2019 and continues to advocate for the traffic management industry via various QLD and national traffic management working groups.

John is the TMAA Vice President and TMAA QLD Board member.

Email: john.cassel@tmaa.asn.au



Dylan Barker

TMAA Treasurer and SA Board Member

Dylan first started his journey into the traffic control industry in 2015, working as a Traffic Controller out on the road network. Here he gained valuable knowledge and skills on what to expect in the industry. Dylan then transitioned to Traffic Planner, working on multiple projects and major events in South Australia. In 2018, Dylan moved to Victoria and became a Major Projects and Planning Manager, managing traffic management on a large scale. Dylan is now back in South Australia and is Operations Manager for Traffic Group Australia.

Dylan Barker is TMAA Treasurer and TMAA SA Board Member.

Email: dylan.barker@tmaa.asn.au


Anthony Simmons

TMAA Secretary and VIC Board member

Anthony has been part of the Traffic Management Industry for over 10 years. His Traffic Management Industry knowledge and expertise hails from working his way through the industry from Traffic Controller to his current position as General Manager Road Services.

Anthony is committed to the on going advancement of the industry through close consultation with Road Authorities, raising the professionalism through tiered training accreditation and believes the TMAA must continue to work towards standardisation and harmonisation across the country.

Anthony is the TMAA VIC Board Member.

Ph: 0447 175 986​
Email: anthony.simmons@tmaa.asn.au​



Stephen O’Dwyer

TMAA WA Board Member

Stephen has been part of the traffic management industry for the past 23 years, holding senior leadership roles in national organisations and smaller state-based businesses.

Stephen has held the position of TMAA President twice and has been involved with both TMA QLD and TMA VIC prior to their transition to TMAA, and he was involved in all the State based associations prior to that. He has worked tirelessly to raise the profile and professionalism of the industry through engagement with all key stakeholders including industry and Government at all levels.

Stephen is the TMAA WA Board Member

Ph: 0437 978 072
Email: stephen.odwyer@tmaa.asn.au


Peter Dixon

TMAA TAS Board Member

TMAA TAS Chair Peter Dixon has over 12 years’ experience in road safety from both holding leadership roles in organising special events, and professionally, working with Spectran Traffic. Peter enjoys working with local governments and stakeholders to develop safe solutions and consistency across work sites.

He has a dedication to the safety of the traffic controllers on his sites and the greater public. He is excited by the opportunities opened up by the formal adoption of the harmonised guide to temporary traffic management in Tasmania at the beginning January 2021.

Peter is the TMAA TAS Board representative.

Email: peter.dixon@tmaa.asn.au


Tynan Diaz

TMAA NSW Board Member

Tynan Diaz is a highly accomplished professional in the traffic management industry. With over a decade's worth of experience, Tynan is an operational executive who is deeply passionate about road worker safety, operational excellence, and driving positive change through innovation.

Since assuming the role of TMAA NSW Division Chair in 2021, Tynan has played a vital role in advancing the association's goals and objectives. Tynan's efforts are focused on continuously raising the professionalism of the industry while prioritising safer outcomes for all road works and road users.

Tynan is the TMAA NSW Board Member and NSW Vice chair.

Email: tynan.diaz@tmaa.asn.au


Our People


Matthew Bereni

Chief Executive Officer

Matthew has extensive industry and leadership experience in the public and private sectors in civil and transport engineering. Prior to joining TMAA, Matthew held the role of National Director of Strategy & Innovation with the Australian Road Research Board (ARRB). Matthew’s previous roles included Manager of National Harmonisation at the National Heavy Vehicle Regulator (NHVR) and Manager of Pricing and Economics at the National Transport Commission (NTC). Matthew is a graduate of the Australian Institute of Company Directors and has Honours Masters degrees from ‘École des Ponts ParisTech’ and ‘Ecole Nationale des Travaux Publics de l’Etat’, France and from Imperial College London.

Ph: 0417 553 433
Email: matthew.bereni@tmaa.asn.au


Bailey Morgan

National Secretary

Bailey joined TMAA as National Secretary in 2023. Based in Melbourne, Bailey brings a wealth of expertise garnered over a decade of experience in delivering corporate advisory services across various industries, including Finance, Marketing, and Communications.

Bailey's role holds great significance as she takes on the responsibility of orchestrating our State meetings, ensuring seamless coordination, and providing invaluable support to our State divisions. Her extensive knowledge and proficiency enables effective collaboration and streamlined operations within our association.

Ph: 0466 017 202
Email: bailey.morgan@tmaa.asn.au


Belinda Dyer

National Accounts Officer

Belinda joined the TMAA team in 2024 as our National Accounts Officer. With over 10 years of experience as a qualified Bookkeeper and BAS Agent, Belinda brings a wealth of accounting and finance knowledge to her role. She has held corporate positions at organisations like PricewaterhouseCoopers, where she gained experience in events, marketing, human resources, and office management.

Most recently, Belinda served as the Executive Officer and Member Support lead for the Australia Indonesia Business Council. At TMAA, she oversees all aspects of accounting and finance operations. Her well-rounded background and expertise inform her work to support the association's growth and success.

Ph: 0493 534 282
Email: accounts@tmaa.asn.au

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