Each day we live our lives through a progression of journeys. Whether by car, bus, train, ferry, cycle or on foot, our journeys begin and are realised on an intricate network of road, rail or paths linking departure to arrival.

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TDG is New Zealand’s largest specialist transportation engineering consultancy offering a full range of professional services in transportation: engineering, planning, modelling, analysis and design. With offices throughout the country, our work spans large and small developments, in both the private and public sectors. Wherever people and transportation meet, that's where we are. Making that meeting point better, is what we do.

Featured Projects


Meridian Energy Limited owns and operates a number of hydroelectric power stations and wind farms in New Zealand, ensuring all electricity supplied to customers is done so from renewable sources. Project Hurunui Wind is a proposed wind farm in North Canterbury that will allow Meridian to construct 33 wind turbines... Read more »


A Rising STAR (Site Transport and Access Review) As means of enhancing our range of service to our clients, TDG has developed a range of Site Transport and Access Review (STAR) reports for clients in the Auckland region. The STAR report is a short strategic transport and accessibility report which... Read more »

    Latest News

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    Journeys - Summer 2015
  • 20/02/2015 » Another new year is underway, and happily, continuing the momentum of 2014. This issue of Journeys, we reflect on work and developments from the last six months, including likely RMA changes, whether Park and Ride facilities increase public transport user numbers and the completion of Wellington’s Arras Tunnel. » Read more »

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    New GIS Specialist for TDG
  • 07/01/2015 » TDG is pleased to formally announce the addition of Spencer Han to the TDG Auckland team. » Read more »

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    New Senior Engineer for TDG
  • 20/08/2014 » We are pleased to welcome Jack Wan to the TDG Auckland team. » Read more »