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

4 AsBuiltPegasus Entrance

Wamakariri District has one of the fastest growing populations in the country. Statistics New Zealand indicate the District’s population will grow each year by 1.6% between 2006 and 2031, which makes it the third fastest growing district in the country. The Pegasus Town development is a complete new town environment,... Read more »


‘iWay’ is the branding name chosen by Hastings District Council (HDC) for the strategies, interventions and community initiatives to support and promote active mode transport choices in Hastings. The iWay project is partly funded by the award received from NZ Transport Agency (NZTA) in 2010 to support Hastings’ aspiration to become... Read more »

    Latest News

  • Julie
    Appointment of New Director, Julie Ballantyne
  • 02/07/2015 » We are very pleased to announce that Julie Ballantyne has been appointed as an Executive on the Board of Directors of TDG. » Read more »

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    Waikato Collaboration Seminar
  • 02/07/2015 » Judith Makinson, an Associate in our Hamilton Branch, will be presenting a case study at the upcoming seminar “Improving Collaboration between architects & engineers”; along with representatives from Chow:Hill and Holmes Consulting Group. This will be followed by some informal group discussion. This is brought to you by the Waikato branches of IPENZ, ACENZ and NZIA.  All members and member firm staff are welcome. » Read more »

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    Unanderra Town Centre Access and Movement Strategy
  • 03/06/2015 » TDG is assisting Wollongong City Council, NSW to plan access and movement measures for the Unanderra community, enabling an active and accessible town centre environment for many years to come. » Read more »