Perth Car Park Swept Path Analysis

Job ID: 40042159

Budget: $250 – $750 AUD

The City of Perth in Western australia requires a swept path analysis for the lower ground car park to confirm manoeuvring into and out of the bays taking into account the low staff turnover in this area.

In Western Australia, councils generally expect swept path analysis to follow Australian Standards (especially AS 2890 series for parking and access) and any specific local planning or engineering guidelines, presented on accurate base plans and using appropriate design vehicles and software. In practice, this means using a qualified traffic/transport engineer to prepare diagrams that clearly demonstrate vehicles can enter, circulate and exit safely and in compliance with local government requirements.​

Key technical standards
Councils typically require compliance with the Australian Standard AS 2890.1 (off‑street car parking) and related parts (such as AS 2890.2 for commercial vehicles) for bay sizes, aisle widths, and access geometry that underpin the swept paths. For heavy or unusual vehicles, Main Roads WA and national Performance‑Based Standards low‑speed swept path criteria may be relevant, particularly at intersections and service vehicle areas.​

Base information and drawings
A swept path analysis must be carried out on an accurate base drawing, usually a current feature survey showing kerbs, boundaries, structures, columns, services, grades and any constraints. Councils expect drawings to be to scale (commonly 1:200 or 1:250), with clear dimensions and enough surrounding context to show that manoeuvres do not conflict with adjacent roads, footpaths or infrastructure.​

Design vehicles and software
You need to nominate appropriate design vehicles that reflect the largest and most critical vehicles expected (e.g. B99/B85 cars, waste collection trucks, emergency vehicles, semitrailers, buses), and justify them if they are not standard passenger cars. Councils increasingly expect swept paths to be generated using recognised vehicle‑tracking software within CAD (rather than sketching by hand), using correct vehicle templates and allowing a clearance margin (often around 300 mm) from obstructions.​

Content of the swept path diagrams
Submitted diagrams usually must show at least: entry and exit paths, internal circulation, reversing and turning areas (if any), and confirmation that vehicles can exit in a forward direction where required by policy. Tracks should clearly show body overhang, wheel paths, and any encroachments over centre lines, parking bays or pedestrian areas, with notes on any required kerb modifications or splays.​

Submission and professional responsibility
Many WA councils ask that swept path analysis supporting a DA or subdivision be prepared or signed off by a suitably qualified traffic engineer as part of a Transport or Traffic Impact Assessment, particularly for higher‑impact uses (e.g. service stations, large car parks, mixed‑use developments). It is important to check the specific local planning scheme, local planning policies and any council engineering design guidelines, because they can add more detailed swept‑path or access requirements beyond the general Australian Standards.​