From residential developments to commercial, industrial, and mixed-use projects, car parking forms a fundamental part of site functionality.  But efficient car park design is about more than just fitting cars into available space — it’s about safety, accessibility, usability, and future adaptability.

At Quantum Traffic, we regularly assess and design car parks that meet planning, operational, and user expectations across a wide range of developments. In this article, we explore how to design a compliant and efficient parking layout — and answer some of the most common questions developers and architects ask us.

What Is the Most Efficient Car Park Design?

The most efficient car park design is one that balances space utilisation, traffic flow, and user functionality, while meeting relevant Planning / Australian Standard requirements.

Efficiency doesn’t just mean squeezing in more bays.  In fact, the best-performing designs are those that:

• Minimise driver confusion and internal congestion
• Enable safe entry and exit for all vehicles
• Provide clear wayfinding and signage
• Accommodate all user types, including accessible parking
• Plan for future needs like EVs, bikes, and shared mobility

Good car park design begins with smart planning and an understanding of both vehicle movements and human behaviour.

Sometimes the best way to optimise a proposed or existing Car Park is to prepare a Car Parking Management Plan (CPMP).

🚧 How to Design a Car Parking Layout

Whether you’re designing a residential basement, retail centre, or public car park, there are six key principles to consider:

1. Access and Circulation

Smooth circulation starts with smart entry and exit planning. Designs should minimise queuing, avoid bottlenecks, and help drivers navigate intuitively.

Best practices:

• Locate access points on lower-volume roads to avoid external traffic disruption
• Separate entry and exit points where possible or facilitate simultaneous entry and exit.
• Provide clear, direct circulation aisles
• Position short-stay or visitor parking close to entrances

2. Traffic Movements and Geometry

Design geometry should support predictable and conflict-free movements.

Recommended approaches:

• One-way aisles to simplify flow and reduce conflict
• Generous internal radius and widening around 90 degree bends
• Drive-through bays for convenience in high-turnover areas
• Avoid dead-end bays without turning space
• Ensure turning circles suit the largest anticipated vehicle

3. Car Spaces Layout and User Functionality

Designing for functionality means ensuring all bays are usable by typical vehicles without unnecessary difficulty.

Our advice:

• Use 90-degree bays for standard parking with good turnover
• 60-degree bays for narrow sites with high entry/exit demand
• Ensure reversing distances and aisle widths align with 52.06/DCP/AS2890.1
• Consider wider bays in high-traffic areas, for parent parking, next to walls or columns

What Is the Standard Car Park Design in Australia?

Australian car park design is guided by the AS2890 suite of standards, particularly:

• AS2890.1: Off-Street Car Parking
• AS2890.2: Commercial Vehicle Facilities
• AS2890.6: Accessible Parking
• AS2890.3: Bicycle Parking

Key Australian design standards:

• Standard bay size: 2.4m wide x 5.4m long
• Accessible bays: 2.4m wide with a 2.4m wide shared space
• Minimum aisle width: 5.8m for 90-degree parking depending on user class
• Ramp gradients, clearance heights, and turning paths must also comply

NOTE:  Different States and Local Council’s may have different dimensions to these.  Speficially the Victoria Planning Provision sets out alternative dimensions which utilise part of the access aisle for cars to overhang.  These are characterised by 4.9m long bays with 2.6m wide spaces/6.4m aisle (wider bays narrower aisles can be adopted).

At Quantum Traffic, we apply these standards rigorously while tailoring designs to meet local council policy and site-specific needs.

We also undertake Performance Solutions where some or all of these dimensions may be difficult to achieve.

What Is the Best Design for a Parking Space?

The best parking space design is context-dependent, but should always prioritise:

• Ease of entry/exit: Is the bay easily accessible for a typical user?
• Location: Are accessible bays placed closest to building entries?
• Surroundings: Are there obstructions, walls, or columns?
• Vehicle type: Does the bay accommodate SUVs or larger vehicles?

In general:

• Keep aisle widths generous for high turnover areas
• Ensure full DDA compliance for accessible bays
• Provide EV charging points with adequate access clearance
• Use linemarking and signage to guide drivers appropriately

Signage, Wayfinding and Technology

Signage is critical in supporting intuitive navigation and safe internal circulation. As sites become larger and more complex, digital systems can also help.

We recommend:

• Colour-coded zones and clear directional arrows
• Entry/exit signs and bay numbering
• Digital bay indicators (for larger, high turnover facilities)
• Signage that address clearance, speed limits, and EV zones

Technology integrations may include:

• Automatic boom gates with licence plate recognition
• App-based or contactless payment systems
• Real-time bay availability displays
• EV charging systems with smart load management

Planning for Flexibility and the Future

Great car park design is not just about meeting today’s minimums, it is about anticipating what users will need five, ten, or twenty years from now.

We help clients future-proof their facilities by:

• Allowing for modular reconfiguration or adaptive reuse
• Designing with car share, e-scooter, and bicycle infrastructure in mind
• Planning for EV expansion, not just one bay, but a scalable system

Final Thoughts

Designing an efficient car park means balancing compliance, usability, and long-term value. A well-planned layout supports smoother operations, safer movements, better user experiences — and ultimately, more successful developments.

At Quantum Traffic, we apply industry best practice, real-world insight, and up-to-date planning policy to help our clients deliver functional, future-ready parking outcomes.

Need support with your next car park design?

We provide layout assessments, swept path modelling, car park optimisation, and detailed traffic engineering reports for developments across Sydney, Melbourne, Canberra, Brisbane and beyond.

📞 Call us on 1300 757 016 or get in touch online to request a proposal.