Austroads has released Edition 1.2 of the Austroads Guide to Temporary Traffic Management (AGTTM), introducing updates across Parts 1-7, 9 and 10 of the Guide.
Unlike the major changes introduced in AGTTM Part 8 in 2025, Edition 1.2 is considered an incremental update, focusing on improving clarity, consistency, and alignment with current industry practices and standards.
According to Austroads, approximately 30% of content across the updated Parts has been revised, although the extent of change varies significantly between sections of the Guide.
Important note:
Before diving into the changes, it’s important for Western Australian practitioners to understand one key point:
At the time of writing this article this updated edition has not yet been formally adopted in Western Australia. Changes will only become mandatory once they are incorporated into the relevant WA guidance and regulatory framework, such as the Main Roads WA Traffic Management for Works on Roads Code of Practice.
What Is the AGTTM?
The Austroads Guide to Temporary Traffic Management (AGTTM) provides nationally consistent guidance for the planning, design, implementation, and operation of temporary traffic management across Australia and New Zealand.
The Guide is divided into several Parts covering topics such as:
- Traffic management planning
- Static worksites
- Mobile works
- Short-term low-impact worksites
- Traffic controller operations
- Sample layouts
- Risk management and supporting guidance
It serves as a key reference document for road authorities, traffic management companies, planners, designers, and field personnel. You can access the full guide here.
What Are the Main Themes of Edition 1.2?
Rather than introducing entirely new processes, Edition 1.2 focuses on:
- Clarifying ambiguous requirements
- Improving consistency of terminology
- Aligning guidance with AGTTM Part 8 Edition 2.0
- Improving alignment with Australian Standards including AS1742.3
- Removing duplicated or outdated content
- Improving use of mandatory language such as “must”, “should” and “may”
Key Changes Summary
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Introduction of TTM Assurance
The biggest change in Edition 1.2 is the introduction of a broader Temporary Traffic Management (TTM) Assurance framework within Part 10. This expands the focus beyond audits and inspections to include reviews, monitoring, evaluations and record keeping throughout the project lifecycle.
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Updated Guidance for Static and Mobile Worksites
Several updates have been made to worksite design guidance, including sign placement, traffic control stations, temporary speed limits, TMA deployment, VMS use, tapers and convoy spacing. These updates primarily affect Traffic Management Designers and Worksite Traffic Management personnel.
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Additional Guidance for Traffic Controllers and Implementers
Edition 1.2 introduces further clarification around Traffic Controller responsibilities, vulnerable road users, supervision of trainees, pre-start documentation and traffic control near intersections and signals.
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Greater Alignment and Consistency
The update improves consistency in terminology and use of mandatory language such as must, should and may, while aligning the Guide with AGTTM Part 8 Edition 2.0 and current Australian Standards including AS1742.3.
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No Major Structural Changes
Importantly, Austroads has retained the existing AGTTM structure and referencing system to minimise disruption for industry users and training providers.
The Biggest Change: Introduction of TTM Assurance
The most significant update in Edition 1.2 is the introduction of Temporary Traffic Management (TTM) Assurance within Part 10.
The previous approach largely focused on:
- Suitability Reviews
- Compliance Safety Inspections
- Road Safety Audits
Edition 1.2 expands this framework to include:
- Reviews
- Inspections
- Monitoring
- Audits
- Evaluations
- Record Keeping
- Assurance considerations throughout the project lifecycle
This change aims to create a more structured and consistent approach to quality assurance, compliance, and continuous improvement across traffic management projects.
For organisations managing large or complex worksites, these changes may influence internal auditing processes and project governance procedures.
What Should Traffic Management Practitioners Do Now?
Austroads recommends that practitioners:
- Download the latest versions of the AGTTM.
- Review changes relevant to their accreditation level and role.
- Understand how the updates may impact current work practices.
- Monitor announcements from their jurisdiction regarding implementation dates.
For Western Australian practitioners, it is particularly important to confirm when and how Main Roads WA intends to adopt these updates, likely expected in late 2026 or early 2027.
Stay Ahead of Industry Changes
At AusQ Training, we continue to monitor industry developments and regulatory changes to ensure our training remains aligned with current best practice and evolving industry expectations. As Main Roads WA adopts future updates, our training resources and course content will continue to evolve alongside industry requirements.
To keep up with important traffic management news and compliance updates, explore our Latest News page or contact our team to be added to our mailing list and receive future updates directly in your inbox.
