When designing accessible parking spaces, the required width of a shared zone beside an accessible parking space in Australia referring to AS2890.6:2009 mandates a 2400mm wide shared zone, whilst in New Zealand referring to NZS 4121:2001, only requires a 1200mm width. This raises the question, why such a large difference between two countries with otherwise similar building codes?
The answer lies in differing design philosophies. Australia takes a more risk averse and inclusive approach to accessibility. The 2400mm shared zone is designed to accommodate side access from wheelchair-accessible vehicles, allowing for safe maneuvering of powered wheelchairs, carers, or mobility aids, and to future proof facilities for a wide range of disability needs. New Zealand, in contrast, applies a performance based approach, focusing on the minimum required to function safely in most situations. The 1200mm wide shared zone typically provides sufficient clearance but doesn’t allow for the same diversity of users.
Vehicle type also plays a role. Australian standards consider the use of larger vehicles, such as disability vans, often equipped with side mounted hoists or ramps. These require more lateral space for safe operation. New Zealand standards seem to assume more common rear or side transfers from standard vehicles, with less reliance on side entry systems.
User advocacy has also shaped these outcomes. In Australia, disability advocacy groups have contributed to the development of more generous space provisions that accommodate a broader range of users and mobility needs. New Zealand’s process may have focused more on meeting compliance rather than exceeding it.
In summary, both standards aim to ensure accessibility, but Australia’s requirement for a 2400mm wide shared zone reflects a broader focus on inclusive design, greater flexibility, and alignment with international best practices. New Zealand’s 1200mm wide shared zone standard represents a more compact, practical approach that meets essential needs within tighter space constraints.
It is noted both Australia and New Zeland require a 5400mm long shared zone.