AGTTM Edition 1.2 (May 2026 Update): A Guide for VIC and SA Project Teams

Topic: Temporary Traffic Management | AGTTM Update
Applies to: Victoria and South Australia
Published: June 2026

AGTTM May 2026 Update: A Guide for VIC and SA Project Teams

In late May 2026, Austroads released updated editions of the Guide to Temporary Traffic Management (AGTTM), covering Parts 1 through 7, Part 9 and Part 10. The updates apply across the full temporary traffic management lifecycle, from initial planning and Traffic Management Plan preparation through to Traffic Guidance Scheme design, sample layouts and assurance practices.

This is not a wholesale rewrite of the framework. It is best understood as a suite-wide alignment release, bringing the rest of the AGTTM in line with the Part 8 harmonisation framework that has been progressively implemented since 2024. But alignment releases still have practical consequences, particularly for any Traffic Management Plan or Traffic Guidance Scheme prepared from this point forward.

The practical risk is not that every project needs to be redesigned. It is that older TMP templates, standard TGS layouts and internal QA checklists may continue to be reused without being checked against the current guidance.

The responsibility for ensuring that documentation reflects current guidance sits with the Traffic Management Designer. Road authorities are expected to allow a grace period, but that does not change the obligation on the party preparing the TMP. Any TMP prepared after the May 2026 release should reflect the updated guidance.

Does This Update Apply to Your Project?

This is the most important question to answer before anything else, because the AGTTM is not applied uniformly across every Australian jurisdiction.

Victoria and South Australia: The May 2026 update is relevant and should be applied to Traffic Management Plans and Traffic Guidance Schemes prepared from the date of release.

Queensland: The May 2026 update does not change the requirements currently applying in Queensland. Queensland applies the Queensland Guide to Temporary Traffic Management (QGTTM) framework, and any changes flow through the Queensland publication process. The next opportunity for these changes to flow through to Queensland is expected around the November 2026 biannual update.

New South Wales: The updated AGTTM editions do not replace the Traffic Control at Work Sites (TCAWS) Technical Manual used in New South Wales. The May 2026 release does not change NSW requirements.

For organisations working across multiple states, this distinction matters. A document prepared under the current AGTTM framework may not automatically satisfy the requirements of a different jurisdiction, and vice versa.

What Actually Changed

The update touches a broad range of practical areas. The parts most relevant to builders, project managers and traffic management providers in VIC and SA are as follows.

Part 2: Traffic Management Plans
Updated TMP requirements linked to the Part 8 harmonisation changes, including site inspections, registers and record-keeping obligations. Any standard TMP template in use prior to May 2026 should be checked against the updated Part 2 before reuse.

Part 3: Static Worksites and Traffic Guidance Scheme Design
Part 3 remains the core reference for static worksite arrangements and TGS design. The May 2026 update includes changes relevant to how practitioners interpret and apply the updated framework, including updated terminology and category references aligned to Part 8.

Part 9: Sample Layouts
Amended sample layouts and minor edits throughout. Standard TGS layout libraries should be reviewed against the updated Part 9 before being applied to new projects.

Part 10: Assurance
Updated and new assurance guidance, including changes to inspection, audit and review processes. Relevant to anyone responsible for QA and checking of traffic management documentation.

Parts 4 through 7 also include updates. Mobile works guidance, short-term low-impact worksite arrangements, supervision requirements and convoy vehicle procedures are all areas that may be affected depending on the nature of the work.

What This Means if You Are a Builder or Project Manager

If you have a project in Victoria or South Australia that involves works on or near a road, the traffic management documentation being prepared for that project should reflect the May 2026 AGTTM. This applies whether the TMP is being prepared by an in-house team or an external traffic management contractor.

The practical questions worth asking before your next project proceeds:

• Is your traffic management provider aware of the May 2026 update and applying it to documentation prepared from this point forward?
• Are any existing TMPs or standard TGS layouts being reused from previous projects? If so, have they been reviewed against the updated guidance?
• Do your internal procedures or subcontractor requirements reference specific AGTTM editions? If so, those references may need updating.

These are not complex questions, but they are easy to miss when a project team relies on documentation from a previous job. Confirming them early can reduce the risk of rework, review delays and late changes to the project programme.

What This Means if You Are a Traffic Management Company

The responsibility for ensuring that TMPs and TGSs reflect current guidance sits with the Traffic Management Designer. For traffic management companies operating in Victoria and South Australia, the May 2026 release is a prompt to review. The highest-risk documents are often the ones that look most familiar: standard templates, standard layouts and standard checklists.

• Standard TMP templates and whether they reflect updated Part 2 requirements
• TGS layout libraries and whether sample layouts remain current against Part 9
• Role descriptions, sign-off responsibilities and competency references aligned to the Part 8 framework
• Internal QA and assurance checklists against the updated Part 10 guidance

For companies with operations across multiple states, it is also worth confirming which version of the framework applies in each jurisdiction before applying updates across the board.

The July 6 Austroads Webinar

Austroads is hosting a webinar on 6 July 2026 covering the May 2026 AGTTM updates. For traffic management designers and practitioners who want a direct briefing on the changes from Austroads, this is worth attending. Details are available on the Austroads AGTTM page.

How Modus Can Help

Modus is reviewing the updated AGTTM editions to ensure that Traffic Management Plans and traffic engineering advice prepared for clients in Victoria and South Australia reflects the current guidance from the date of release.

For builders and project teams with works in the pipeline, Modus can assist with site-specific TMP preparation under the updated framework, review of existing documentation, and advice on jurisdiction-specific requirements across VIC, SA and other states. View more traffic engineering projects to see how Modus supports projects through the traffic management and DA process.