Introduction
AACG provides road traffic noise assessments for development applications (DA), council submissions, and building design compliance.
Assessments are prepared in accordance with:
- NSW planning requirements for development near busy roads
- State Environmental Planning Policy (Transport and Infrastructure) 2021
- Development Near Rail Corridors and Busy Roads – Interim Guideline
We deliver clear, measurable, and buildable acoustic requirements aligned with approval and construction outcomes.
When You Need a Road Traffic Noise Assessment
A road traffic noise assessment is required where:
- Development is located near busy roads or transport corridors
- Traffic volumes exceed planning thresholds
- A development application (DA) is being submitted
- Council requires an acoustic report for road noise
- Residential or sensitive-use buildings are proposed
This applies to:
- Houses and duplexes
- Apartments and mixed-use developments
- Childcare and accommodation uses
Planning Requirements (NSW)
Road traffic noise is regulated through planning policy.
Key requirements include:
- Consideration of noise impacts for developments near major roads
- Demonstration that internal noise levels achieve required limits
- Provision of acoustic treatments where required
For residential development, typical internal criteria include:
- 35 dB(A) in bedrooms (night)
- 40 dB(A) in other habitable spaces
Compliance must be demonstrated through a formal acoustic assessment.
External Traffic Noise Environment
Road traffic noise assessments are based on measured or modelled external noise levels.
AACG assesses:
- Traffic volumes and road classification
- Vehicle speeds and flow patterns
- Distance to road and façade exposure
- Site orientation and shielding
Where required, we undertake:
- On-site noise monitoring
- Traffic noise modelling (CoRTN or equivalent methods)
Outputs define external façade noise levels used for design.
Internal Noise Level Requirements
The objective is controlled internal acoustic performance.
This requires:
- Assessment of noise transfer through the building envelope
- Prediction of internal noise levels based on façade performance
- Alignment with planning-based internal noise criteria
Internal performance is driven by:
- Glazing systems
- Building envelope design
- Room configuration and façade exposure
Noise Intrusion Assessment
AACG applies a structured methodology to assess road traffic noise intrusion.
This includes:
- Analysis of external noise exposure
- Assessment of façade transmission paths
- Evaluation of glazing, walls, and roof systems
- Prediction of internal noise levels
Noise intrusion is primarily controlled through:
- Windows and glazed elements
- Doors and openings
- Envelope detailing and sealing
Construction Requirements for Compliance
Compliance is achieved through coordinated building design.
Glazing Systems
- Primary control element for road traffic noise
- Defined glass thickness and configuration
- Acoustic seals to all operable elements
External Walls
- Masonry construction typically compliant without upgrade
- Lightweight walls require defined acoustic systems
- All penetrations must be sealed
Roof and Ceiling
- Considered where relevant to façade exposure
- Insulation and lining requirements defined as needed
Doors and Openings
- Solid core construction required
- Acoustic sealing to maintain performance
System performance depends on complete envelope integrity.
Our Reports
AACG road traffic noise reports are:
- Prepared for development application (DA) submission
- Aligned with planning policy and council requirements
- Structured for clear assessment by planners and certifiers
Each report includes:
- Site-specific traffic noise assessment
- External noise level definition
- Internal noise criteria
- Building envelope requirements
- Clear, buildable construction recommendations
Our Process
AACG applies a controlled, repeatable methodology:
- Review of planning controls and project scope
- Assessment of traffic noise exposure
- Measurement or modelling of external noise levels
- Prediction of internal performance
- Development of compliant construction requirements
Outputs are:
- Coordinated with architectural documentation
- Suitable for approval without rework
- Clearly defined for construction
Our Quality
AACG reports are defined by:
- Verified data inputs and modelling
- Alignment with planning requirements
- Consistent documentation standards
- Focus on compliant internal outcomes
We do not produce generic reports.
Each assessment is site-specific and performance-driven.
Our Commercial Approach
Road traffic noise requirements primarily affect:
- Glazing systems
- Façade design
- Ventilation strategy
AACG ensures:
- Requirements are defined early
- Over-specification is avoided
- Solutions align with construction methods
This reduces redesign risk and supports efficient project delivery.
Our Guarantees
AACG provides:
- Council-ready road traffic noise assessments
- Clear and defendable compliance criteria
- Consistent, professional documentation
We also provide:
- Coordination with architects and designers
- Responses to council RFIs
- Ongoing support through design changes
Request a Road Traffic Noise Assessment
AACG will:
- Review your site and traffic exposure
- Confirm planning requirements
- Provide a clear scope for your DA acoustic report
