Traffic Impact Assessment (TIA)

Traffic Impact Assessments prepared by experienced traffic engineers to support development approvals across Australia.

Clear advice to assess access, parking, and road network impacts and address authority requirements early.

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Traffic Impact Assessment Services Across Australia

Our Engineering Process

Our Traffic Impact Assessment process ensures that each assessment is scoped, analysed, and reported in ways that anticipate reviewer expectations and align with authority requirements

Project Scoping & Approval Context

We review the proposed development against applicable planning controls, traffic thresholds, and authority requirements to confirm the scope and level of assessment required.

Traffic Analysis & Network Testing

We assess trip generation, access arrangements, parking demand, and network performance using appropriate analysis and modelling tools to test real-world impacts.

Mitigation & Approval-Ready Reporting

We develop practical mitigation measures and prepare clear, concise reports that directly address reviewer expectations and support efficient assessment outcomes.

Speak with a Traffic Engineer About Your TIA Requirements

Connect early to clarify authority expectations and identify potential network, access, or parking issues before lodgement.

Get your Traffic Impact Assessment underway

Why Modus?

Traffic Impact Assessments often interact with other transport and access considerations. Modus provides integrated advice to support coordinated, efficient approvals.

Assessment with Context

Each Traffic Impact Assessment is prepared with a clear understanding of the site, surrounding network, and applicable planning framework.

Early Risk Identification

Transport, access, and parking risks identified early so design changes can be made before issues become costly or time critical.

Jurisdictional Experience

Experience delivering Traffic Impact Assessments across varied planning schemes and state road authority frameworks nationwide.

Traffic Impact Assessment FAQs

Common questions about Traffic Impact Assessments and the development approval process.

What is a Traffic Impact Assessment?

A Traffic Impact Assessment (TIA) is a technical report that evaluates how a proposed development is likely to affect surrounding roads, access points, parking, and transport networks. It is used by councils and road authorities to understand whether a development can operate safely and efficiently within the existing network.

When is a Traffic Impact Assessment required for a development?

A Traffic Impact Assessment is typically required when a development exceeds traffic or parking thresholds set by local planning schemes or state road authorities. This may include higher-density residential projects, commercial developments, or sites with new or altered access arrangements.

Can a Traffic Impact Assessment identify issues before lodgement?

Yes. Early TIA advice can highlight access constraints, parking shortfalls, or network impacts before plans are finalised, allowing project teams to adjust designs and reduce approval risk.

Do Traffic Impact Assessments guarantee approval?

No assessment can guarantee approval. However, a well-prepared Traffic Impact Assessment provides decision-makers with clear, evidence-based analysis and practical mitigation measures to support informed outcomes.

Who reviews a Traffic Impact Assessment?

TIAs are generally reviewed by local council traffic engineers and, where applicable, state road authorities. The level of review depends on the location of the site and the surrounding road network.

Is a Traffic Impact Assessment the same as a Traffic Impact Study?

The terms Traffic Impact Assessment and Traffic Impact Study are often used interchangeably. Both generally refer to an assessment of a development’s traffic and access impacts, although specific terminology and requirements can vary between councils and states.

Who can prepare a Traffic Impact Assessment?

We can! Traffic Impact Assessments are generally prepared by qualified traffic or transport engineers with experience in development approvals and road authority requirements. Councils and state authorities often expect assessments to be prepared by suitably experienced professionals.

What issues can a Traffic Impact Assessment identify?

A Traffic Impact Assessment can identify issues such as access constraints, insufficient parking provision, traffic congestion impacts, safety concerns, and conflicts with pedestrians, cyclists, or heavy vehicles. Identifying these early allows designs to be adjusted before lodgement.

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Traffic Impact Assessment (TIA)

Projects Completed

Total Clients

Projects in Progress