VDAM Rule released 2016 PDF: http://www.nzta.govt.nz/resources/rules/vehicle-dimensions-and-mass-amendment-2016/

New Zealand Transport Agency Rules: http://www.nzta.govt.nz/resources/results.html?catid=2

Proforma and High Productivity Vehicles: http://www.nzta.govt.nz/vehicle/your/hpmv/proforma.html

50 MAX: http://www.nzta.govt.nz/commercial-driving/high-productivity/50max/50max-information-for-operators-and-manufacturers/